diff --git a/make_post_sell/lib/mail.py b/make_post_sell/lib/mail.py
index 4872408..8ba7238 100644
--- a/make_post_sell/lib/mail.py
+++ b/make_post_sell/lib/mail.py
@@ -76,10 +76,10 @@ def send_purchase_email(request, to_email, products, total_cost):
     product_text = "<br/>".join(product_text_list)
 
     message_text = PURCHASE_1_TEXT.format(
-        "%.2f" % total_cost, request.app_url
+        "%.2f" % total_cost, request.host_url
     )
     message_html = PURCHASE_1_HTML.format(
-        subject, request.app_url, product_text, "%.2f" % total_cost
+        subject, request.host_url, product_text, "%.2f" % total_cost
     )
     send_pyramid_email(request, to_email, subject, message_text, message_html)
 
@@ -119,10 +119,10 @@ def send_sale_email(request, shop, products, total_cost):
     product_text = "<br/>".join(product_text_list)
 
     message_text = SALE_1_TEXT.format(
-        "%.2f" % total_cost, request.app_url
+        "%.2f" % total_cost, shop.absolute_sales_url(request)
     )
     message_html = SALE_1_HTML.format(
-        subject, request.app_url, shop.id, product_text, "%.2f" % total_cost
+        subject, shop.absolute_sales_url(request), product_text, "%.2f" % total_cost
     )
 
     # send a separate email for each shop owner.
diff --git a/make_post_sell/lib/mail_messages.py b/make_post_sell/lib/mail_messages.py
index 306cf0c..7dab3cf 100644
--- a/make_post_sell/lib/mail_messages.py
+++ b/make_post_sell/lib/mail_messages.py
@@ -40,7 +40,7 @@ Thank you very much!
 """
 
 # 0: subject,
-# 1: request.app_url,
+# 1: request.host_url,
 # 2: product_text,
 # 3: total_cost,
 
@@ -99,10 +99,9 @@ Great job!
 """
 
 # 0: subject,
-# 1: request.app_url,
-# 2: shop.id,
-# 3: product_text,
-# 4: total_cost,
+# 1: shop.absolute_sales_url
+# 2: product_text,
+# 3: total_cost,
 
 SALE_1_HTML = """
 <!DOCTYPE html>
@@ -116,12 +115,12 @@ SALE_1_HTML = """
     You made a <u>sale</u>!
     </h2>
 
-    <b>${4}</b>
+    <b>${3}</b>
 
-    {3}
+    {2}
 
     <p>
-    You may view <a href="{1}/s/{2}/sales" style="font-weight: bold;" target="_blank">all your sales</a> at any time.
+    You may view <a href="{1}" style="font-weight: bold;" target="_blank">all your sales</a> at any time.
     </p>
 
     <p style="font-size: .8em;">
@@ -130,8 +129,8 @@ SALE_1_HTML = """
     </span>
     <br>
     <br>
-    <a href="{1}/s/{2}/sales" style="color: #439fe0; font-weight: normal; text-decoration: none; word-break: break-word;" target="_blank">
-    {2}/u/purchases
+    <a href="{1}" style="color: #439fe0; font-weight: normal; text-decoration: none; word-break: break-word;" target="_blank">
+    {1}
     </a>
     </p>
 
diff --git a/make_post_sell/models/product.py b/make_post_sell/models/product.py
index 1b66f51..d9cb255 100644
--- a/make_post_sell/models/product.py
+++ b/make_post_sell/models/product.py
@@ -86,7 +86,10 @@ class Product(RBase, Base):
     created_timestamp = Column(BigInteger, nullable=False)
     updated_timestamp = Column(BigInteger, nullable=False)
 
+    # this value should be treated as immutable after object creation.
     is_bundle = Column(Boolean, default=False, nullable=False)
+
+    # this value should be treated as immutable after object creation.
     is_sellable = Column(Boolean, default=False, nullable=False)
 
     # lazy="joined" performs a left join to reduce queries, it's magic.
@@ -188,10 +191,13 @@ class Product(RBase, Base):
 
     @property
     def is_ready(self):
+        """internal safety checks prior to allowing the sale of this product."""
         if self.is_sellable:
             if self.is_bundle:
                 return True if len(self.bundle_metadata["product-ids"]) >= 1 else False
             return self.has_product_file
+
+        # content is always ready, for example a blog post only needs a title & description.
         return True
 
     @property
@@ -331,11 +337,11 @@ class Product(RBase, Base):
 
         For example:
 
-          https://makepostsell.com/p/product-uuid
+          https://my.makepostsell.com/p/product-uuid
         """
         if slug:
-            return "{}/p/{}/{}".format(request.app_url, self.id, self.slug)
-        return "{}/p/{}".format(request.app_url, self.id)
+            return "{}/p/{}/{}".format(request.host_url, self.id, self.slug)
+        return "{}/p/{}".format(request.host_url, self.id)
 
     def absolute_edit_url(self, request):
         """
diff --git a/make_post_sell/models/shop.py b/make_post_sell/models/shop.py
index 6d774a4..7ea0ab7 100644
--- a/make_post_sell/models/shop.py
+++ b/make_post_sell/models/shop.py
@@ -145,6 +145,7 @@ class Shop(RBase, Base):
 
     @property
     def is_ready(self):
+        """is the shop ready to accept charges?"""
         if self.stripe_secret_api_key and self.stripe_public_api_key:
             return True
         return False
@@ -226,11 +227,11 @@ class Shop(RBase, Base):
 
         For example:
 
-          https://makepostsell.com/s/<shop-uuid>
+          https://my.makepostsell.com/s/<shop-uuid>
         """
         if slug:
-            return "{}/s/{}/{}".format(request.app_url, self.id, self.slug)
-        return "{}/s/{}".format(request.app_url, self.id)
+            return "{}/s/{}/{}".format(request.host_url, self.id, self.slug)
+        return "{}/s/{}".format(request.host_url, self.id)
 
     def absolute_settings_url(self, request):
         """
@@ -238,9 +239,8 @@ class Shop(RBase, Base):
 
         For example:
 
-          https://makepostsell.com/s/<shop-uuid>/edit
+          https://my.makepostsell.com/s/<shop-uuid>/settings
         """
-
         return "{}/settings".format(self.absolute_url(request, slug=False))
 
     def absolute_about_url(self, request):
@@ -249,8 +249,9 @@ class Shop(RBase, Base):
 
         For example:
 
-          https://makepostsell.com/s/<shop-uuid>/about
+          https://my.makepostsell.com/s/<shop-uuid>/about
         """
+        # why ure slug for this URL, is it for SEO?
         return "{}/about".format(self.absolute_url(request))
 
     def absolute_terms_url(self, request):
@@ -259,6 +260,9 @@ class Shop(RBase, Base):
     def absolute_privacy_policy_url(self, request):
         return "{}/privacy-policy".format(self.absolute_url(request, slug=False))
 
+    def absolute_sales_url(self, request):
+        return "{}/sales".format(self.absolute_url(request, slug=False))
+
     def set_description(self, new_description):
         self.description = new_description
         self.description_html = markdown_to_html(self.description)
diff --git a/make_post_sell/request_methods.py b/make_post_sell/request_methods.py
index 57bd3c2..844f733 100644
--- a/make_post_sell/request_methods.py
+++ b/make_post_sell/request_methods.py
@@ -129,22 +129,6 @@ def includeme(config):
         """Attach app settings dictionary."""
         return app_settings
 
-    def add_app_url(request):
-        """
-        Use the app_url from config if request.domain ends with the
-        configured root_domain. Otherwise just use the request's host_url
-        """
-        config_app_url = request.app.get("app_url", request.host_url)
-        root_domain = request.app.get("root_domain")
-        if root_domain and request.domain.endswith(root_domain):
-            return config_app_url
-        elif request.domain == "localhost":
-            return config_app_url
-        return request.host_url
-
-    def add_app_domain(request):
-        return request.app_url.split("://")[-1].split(":")[0]
-
     def add_secure_uploads_client(request):
         """returns an S3 compatible client."""
         import boto3
@@ -206,8 +190,6 @@ def includeme(config):
     config.add_request_method(add_spam, "spam", reify=True)
 
     config.add_request_method(add_app, "app", reify=True)
-    config.add_request_method(add_app_url, "app_url", reify=True)
-    config.add_request_method(add_app_domain, "app_domain", reify=True)
 
     config.add_request_method(add_is_shop_domain, "is_shop_domain", reify=True)
     config.add_request_method(add_is_saas_domain, "is_saas_domain", reify=True)
diff --git a/make_post_sell/templates/base.j2 b/make_post_sell/templates/base.j2
index 7c911e5..9731a74 100644
--- a/make_post_sell/templates/base.j2
+++ b/make_post_sell/templates/base.j2
@@ -24,7 +24,7 @@
   {% endif %}
 
   {%- block append_to_head_tag_section %}
-  <title>{{ request.app_domain }}</title>
+  <title>{{ request.domain }}</title>
   {% endblock %}
 </head>
 
diff --git a/make_post_sell/templates/product_edit.j2 b/make_post_sell/templates/product_edit.j2
index 31e3c05..6383e1d 100644
--- a/make_post_sell/templates/product_edit.j2
+++ b/make_post_sell/templates/product_edit.j2
@@ -1,6 +1,9 @@
 {% extends "base.j2" -%}
 
 {%- block call_to_action -%}
+<br/>
+<br/>
+permanent link: <a href="{{ product.absolute_url(request) }}">{{ product.absolute_url(request) }}</a>
 {%- endblock call_to_action -%}
 
 {% block content -%}