I worked there when they launched a membership thing, and it was points to gift cards that got printed on receipt paper in hopes the barcode on the carbon paper would fade before you tried to scan it, not any actual price reduction.
Kind of like how there was all that fine print in the 200 dollar service plan that made it sound like you got more, but it was always just the manufacturer warantee, so if your device qualified for manufacturer warentee, geek squad would give you the cheap out fix, and get the preemo replacements and put them into stock. If the manufacturer warantee didn't cover it, you were fucked.