I absolutely adore this site - there is nothing like it, at least anywhere I've seen. Even Etsy, which I also love for unique gifts and products, isn't like this. It can be a little pricey on some items, but they are such special items I feel it's worth it. And they do have a category "Under $25" if you're definitely needing something on the more frugal side.
I've tried these types of sites on and off throughout the years, but this one I actually really like and will stick around a while for. It's easier to understand than some of the other auction sites. They don't gouge you and have a decent variety of products. I also like that they have a satisfaction guarantee so I feel like there isn't as much risk involved.