Yeah, they're in the same price range when i've seen them. Obviously, this is due to the lacks it has. It has standard back, yes, since the fidelity holders fit perfectly!

As noted i'm really new to LF, although i do understand what you're talking about, i don't know where to look for neither new GG nor a fresnel. Are both of these universal? And do is there some sort of good shop i should use instead of eBay?
Cheers and thanks so far again.