It has been a while since a good deal on the 1660 Supers. FTC just lowered their prices by 10% across their range, meaning the POLKA deals are worth it now.
Be warned: this is possibly the worst rated Australian parts seller, known for taking weeks to ship as well as sending out used cards. The gigabyte ones should have tape sealing the ESD bag. If it does not, demand a refund.
If you pay on eBay you should be fine and dandy from a disputes perspective. You'll eventually get a refund.
update price dropped from $332.10 to $299.7
(profanity) the celtics