Hmm. In New Zealand we can get a decent pair of GTX460s for.. give or take... $140-170 bucks, depending on where you get them. So that, at a guess, is at $100 or so USD?
Are you talking about GTX 460 1GB's, 768MB's, or SE's? Anyhow, GTX 460 1GB's were about $130 when they were nearing the end of production. Now that they're out of production, they are getting inexplicably expensive. I'd say $US130 would be a more reasonable price for them. $163 is pretty ridiculous.