You can always get
sneakycheap!
Also, a friend told me about some shady guy he knew who did the boxswap trick with cameras. But he did it carefully. He would buy for example an olympus 150, then buy an olympus 200 and do the boxswap. Then the 200 for a 250, 250 for a 300, and so on until he had like a 600. So he spent like $200 and ended up with a $700 camera.
Oh and he went to different Wal-marts for all of them, paid cash only and never went back to them again after the swaps.