Not at all... I believe the folks at B&H were selling used G1 kits (with the TL2000 flash & the Planar 45/2) for around that much, so it's kinda reasonable to ask this much for a G2 kit.
At least, it is to me. Besides, Contax G prices have gone South. Did you see the latest in KEH? Granted, I purchased a Planar 35/2 a while ago for $150 plus shipping, but now they have one at $159... and I don't recall if it's in bargain condition.
Oh, well... O tempora, o mores