Bit of a scam, read the fine print.
+1
They're basically giving you 1/4 to 1/8 of what you spend off the next purchase (unless the bottom-most chart is an error).
If you spend $200 they give you $100 GapCash (1/2 back), BUT you'll only get 1/2 to 1/4 off of your next purchase total (during select periods).
You'll still save but not close to what they make it seem!!