How do I browse for the name of items for resale, when the website will NOT let me browse???

I donated an entertainment center (that's what I call it, but Itsdeductible doesn't recognize that name) to Goodwill. I tried, VERY HARD, to find it by searching. That failed. Then I saw that, supposedly, I browse for "the resale values of your donated items".  

WRONG WRONG WRONG WRONG WRONG 

The website refused to let me browse for anything, although it did have the words, "Browse by category". But that was it. Static text that I could do absolutely NOTHING with. So, how in heck am I supposed to use a functionality the page claims I can do, when it refuses to let me do it?