Is there a base pattern out there that people are using as a base?
Around the time the second movie came out (Give or take a few years) there was a full-sized print out or thermal transfer sheet that snuck out of the studio somehow, and ended up being scanned. (Very crappily) It's often call the TKcomics pattern, as that was the username of the first major person to distribute it.
TK released an un-color corrected version (The blues were all grey) and from there people bought, edited, color corrected, and resold the pattern.
The major problem with the pattern is that it was scanned so poorly that the brick musculature disappears in the darker blue sections.
There exists a secondary scan, that was traded a bit more privately, that fixed that problem, but apparently still needed work.
There is at least one person out there with the studio original digital files, and a few more of us who have made our own patterns from scratch. (Fettster, myself, Spidey4Fun)
In the end, thanks to the TKcomics pattern, we know the look and shape of the real deal, so even if the pattern is original to the seller, it will almost certainly look identical to all others out there...at least from a distance.
As to these webs: Is it possible that this seller bought BobbyC's molds? I thought I remembered him selling off his webbing molds a few years back. And since they were open-face molds, it could explain the amount of flashing we're seeing. I just don't remember enough about the shape of BobbyC's webs to say whether that are the same shape and orientation. Though based on the back of hand webbing, I'd say it's based on Spidey 2 webs, and I though Bobby's were based on Spidey 1. Someone correct me if my history is wrong.
-Nick