I usually think 'insane' is when it sells for more than the new price. US$1000 is *less* than I paid for my CyberStorm PPC, and they are all the same age, so I'd say a grand for a PPC is a steal! I'd love to return mine for full price, buy the exact same thing for $1000, and pocket the difference, any day of the week!
But I only paid a couple of hundred for my external FF/SD, so I'd have to agree that this is quite insane.