Personally I find trusting strangers a bit too much, especially with money, isn't really a good idea. I don't understand why he doesn't release a bit of something, like a small beta.
For all we know, the mod could be either much less developed than it appears, or way more complete and he's just milking cash.
I repeat, this is not against him in particular, but in general. I would never pay for something that doesn't seem to have, at least, a promised date of release, a little something.
People tend to be a bit too dazzled by hype, by previews, by promises, by words. Things could often be a lot worse than they appear.
Surely we've all been stunned by ponytail lady swallowing cum, but what if there isn't much else more than that.
I want something more concrete I could base my judgment on.
This is just my opinion anyway.