Here's a list of YT members who sell things.
http://www.yorkietalk.com/forums/yor...ore-sites.html. T. Bumpkins & Co. does sell diapers, and there may be others. The first side of the listing is their website, if you click on the Yorkietalk name, it will take you to their profile page, or PM address. Many offer discounts to other YT members.