The word "generous" doesn't apply to this situation and is being used very loosely. He's doing no one a favor. He's getting paid his asking price by some of you. And he has sold headsculpts before at this forums which means the benefit has been reciprocal: He's made some money and people have been enjoying his headsculpts.
On another note, let me do some comparisons:
Xenoviper's work is just as amazing as Imaresqd1's. His latest headsculpt, Edward Scissorhands, is the most accurate Johnny Depp likeness there is, with an amazing paint job and non sculpted hair. While his price is not cheap, no one has complained about his work being overpriced. He is well respected and admired in this community. The same goes for Z's head sculpts. Great likeness and an affordable price. These customizers have adapted their prices to be accessible to a great percentage of the people in this community. After all, why come here to be part of a community as an artist if you can't make your services accessible for the most people possible. I am not saying that they should give away their work. But why not make it available to more freaks and still make money?
Another example is the guy (sorry forgot his name) who made that wonderful bat-signal. He offered it here first at a reasonable price. Later, when his freaks preorders where filled, he made one (or more, don't remember) to put on ebay. He cashed in selling it for around $700-$800. But he gave this community a chance at it first for a reasonable price.
Yes, you can say "It's his right to charge whatever he wants", "No one is forcing you to buy it", "Art has no determined value, it's subjective", etc., etc., yet still, the price and lack of accessibility of this headsculpt for this community has caused frustration and call it "sour grapes" or whatever, but the artist isn't exactly earning people's respect.
