From MediaSell
1. Click "Settings" -> "Marketplaces" -> "Configuration for eBay"
[edit] 2. Enter your shipping rates:
[edit] 3. Select the acceptable payment methods you would like displayed to your eBay customers:
[edit] 4. Categories and Templates don't need to be configured to activate your eBay account:
[edit] 5. Choose duration times and check "Other Preferences". At this point you will want to SAVE YOUR CHANGES!
[edit] 6. Activate your eBay link: