Looks nice, although I'm curious as to why Blastoise is hanging out in a spot where his main attacks will freeze ;D No, I would never buy it. That may just be because I never buy PSDs.
there is already a tut on how to make these so why would you sell it? the render looks distorted also.
If you want someone to class it, I will. Very nooblish. Blur tool, adjustment layers, stock, and a sprite. Hey, I made the same sig in 5 minutes! And here's the PSD! http://files.filefront.com/lolzip/;13354644;/fileinfo.html
^That's kind of depressing >_> @ OP: You're going to need something a lot better than that for a tut or psd to sell. There are much better tags for sale right now and that tag looks very basic tbh.
Just read some tuts man. Sorry if I was a little on the harsh side. Just keep working and follow lots of tuts and you will get better.