If the prices hike up I tend to wait a few days and usualy when they get them into stock 2-3 days afterwards the prices fall back down again. Happened quite a few times. Especialy on the Leadtek GTX 280.
I'm in a special way with stock. I tend to order out of stock items and they arrive like two days later. It's like wtf? I check on site and they're still listed as "out of stock". So IDK what's going on there. There is DEFINATLY errors in your stock system. While this isn't a bad thing there are definatly errors going on here.