Why? They charged what the market would bear. Actually since they sold out in seconds, maybe in hind sight, they should have charged more.
You think Bill Gates got so rich by selling his software at the cheapest price possible or what the market would bear?
The way I see it, this is a free country & we are not talking about essentials, such a food or fuel. Don't blame someone for making a profit... no matter how big the profit. At the point you start thinking they don't "need" that profit you then open yourself up to folks asking do you "need" that gun, or do you "need" such a high capacity magazine.
What we are seeing is capitalism at its finest. Supply is currently low & demand is exceptionally high. Economics 101 tells us price will go up until the market can't bear it or supply goes up or demand decreases. Many times, high price decreases demand but if you look at this example, where inventory is bought up in seconds, then we obviously haven't reached that point.
I say don't villainize the sellers or the purchasers, as we live in a free society.