It says in addition to 2% cash back on the first $5000 of purchases, I get "Sale Price Protection" of up to $1000/yr or $250 per item back when items go on sale within 60 days of purchase. (You get the sale price even if it wasn't on sale when you bought it). This sounds like there has to be a catch to me. Does this mean if I buy an X2 now, I get the difference from whatever it costs 2 months from now?