I am not sure this is what you want, but Jeff Starr has USP, User Submitted Post that I use. However, he has stepped up with a plugin that is cheap and very customizable for front-end uploads. It may be your solution and it may not be. You will need to check it out!
My knowledge of code is limited as are the instructions on github. Here is the link and about half way down the page is the config and then this item! And thanks Ian, I have been just spinning my wheels searching and watching Youtube videos & was going to give up until now!
Hi, sorry so late to respond. It is the eBay Browse API
