Having been near a Staples store this morning, I stopped by, and decided to buy the SanDisk yellow gaming SD card. Indeed, the in-store price is $59.84, and there is a $10 mail-in rebate. In addition to that, in the Staples "gift ideas" brochure available at the store, there is an insert - coupon booklet which has a $6 off a SanDisk flash memory card of some large size.
I am going to check if the speed of this card is adequate, and if it is I'll probably keep it at this low price. If not, - I'll return it and will buy UltraII from Amazon. Thank you, Bob for the pointer! Igor