yes and no.
TGP2 Stats would probably be one of the closest approximations to what your looking for.
on the subject of "why" TGP2 is a good selling tool --it's just that: TGP2 allows a webmaster to try and actually "sell" a product. your allowed to use banners and text links. full size pics on HTML pages ( for the most part ) with more sales "materials" ( banners, text links, etc. ) on the pages. not just a thumbnail leading to a full size pic.
depending on the type of free site or AVS site your making, if it's a smallish 10 to 15 pic site: look at a TGP2 gallery as 1/2 to 1/3 of those sites. or the other way --a 15 pic free/AVS site is 3 TGP2 galleries. it's all about using your resources to your full advantage.