Unless you are able to sell 5830 to me $109 shipped immediately, then I think you should stfu. Availability has its value. Sapphire 5830 at $160 is still cheaper than the cheapest Sapphire 6870 (rebate can only be used once per address, even with rebate it is $190). If you are building multiple machines with 4 x GPU, the price difference add up to a lot of money very quick.

Sure $109 price point is great, IF you can get them. Otherwise you'd have to wait god knows how long, and be god knows how fast to get any at $109.