you should have had better service Gok, but seriously dude, the signs generally say "20% off the marked price", 20% of $50 is $10, $50-$10 = $40. it's not that hard.
Yeah I know, but I wanted to confirm that the toy was scanning up at that price. It's not a hard request. All she had to do was press a few buttons, scan the barcode - beep - done. Easily done in the fraction of the time it took for her to tell me.