Since anyone that has paid that thread attention recently knows I'm one of the people you're clearly referencing, I should point out that first of all, I never said that I wasn't going to buy it or that $15 was too expensive here. I would think my interest and several postings in the thread show that I'm very interested in the project even at $15.
And as I said, I never stated that I wouldn't buy this game or that $15 was too much for it. I merely showed an understanding when someone else mentioned being uncomfortable with buying a $15 download, stated that I think long and hard about $15 purchases myself, showed a preference for XBLA compilation disc for the more pricey downloads when possible, and clearly showed my opinion about digital purchases. I'm fine with things like $5 downloads and as my Xbox Live account shows, such games account for the bulk of my activity since buying an Xbox 360 at its 1 year anniversary.
But $15 is in a territory that I'm not entirely comfortable with where I haven't made many purchases and I give careful consideration on those that I have. And I'm playing a waiting game on several in the hope they will appear on future XBLA compilation disc. It just means that this game won't be an impulse buy.