Oscommerce ebay integration for adult site

Hi and thanks for taking your time to look at this. Please note that this is for a site containing adult material which is 100% legal here. We know adult material offends many and may be illegal in your area. If so, please read no further. We run auctions on ebay and direct the winners to our Oscommerce site to upsell. We're on a shared server with dedicated IP and certificate. The majority of visitors have problems navigating the site especially if they've won multiple auctions. As it is now, at auction end, we have to update the price(s) at our site, and copy the link(s) of our winning item(s) pages to an email to the winning bidder. That's very time-consuming and leaves a lot of opportunity for error. To simplify their visit and hopefully sell more product from the site, we need an application that would - a)API to ebay using our seller id (already have a token, but no problem getting a new one) b)retrieve the completed auction info including winner's userid, auction number, auction title, winning bid price. c)create an account/cart on our site using only the winners' ebay id and simple reusable temporary password. d)add the winning item(s) to that cart. e)Many of the items we sell are one of a kind and must be set to 'not available' and 'out of stock' at auction's end. On occasion someone will buy an item on the site while it is up for auction on ebay at the same time and we don't notice it. So we have to deal with the problem of selling the same item twice. If necessary, we can set these ebay items to 'not available' at listing time and they should be added to cart at auction end in spite of being 'not available'. f)email the winner so he can log in and his cart will be ready to checkout or continue shopping. g)if paying by Paypal or personal check, no customer info is needed. If by CC he'll have to be directed to where he can complete his account info. The core of our situation is that all items are 'mature audience' and - We've tried Auction Lister Pro without success. Thanks, Bill