the 10% off does not apply to xbone/ps4, video games, and basically anything a guy would want to buy in target. except maybe doritos and mountain dew. it does apply to 3ds xl and Wii U, but do that today since I think 3ds xl is still $150 @ target until end of today (sat).
also best buy has gotten a big shipment of PS4s, most are reserving for sunday but a few just started selling them last night, may wanna go into your BB and see wassup if you missed amazon. If its sunday only, getting there 1 or 2 hours before opening should get you one, since the same thing happened last sunday. walmart is probably doing something similar.
honestly though unless you are trying to buy your kids love or something there is absolutely no reason to get a ps4 or xbone right now, the games are pitiful and don't look to get better for a long while. get a better pc and join the master race