This is the cheapest price I've seen a retail copy of Black Ops and the Witcher for PC. I think I've seen Portal 2 for $29.99 before, but $34.99 ain't too bad.
ncix.com
ncixus.com (will cost slightly extra)
Portal 2, $34.99 - Limit 1 - http://ncix.com/products/?sku=60724&vpn=PORTALPC&manufacture=Valve&promoid=1336
Call of Duty: Black Ops, $29.99 - Limit 5 - http://ncix.com/products/?sku=57597&vpn=CODBOPS&manufacture=ACTIVISION&promoid=1336
The Witcher 2, $39.99 - Limit 2 - http://ncix.com/products/?sku=61105&vpn=WITCHER2&manufacture=Atari&promoid=1336
ncix.com
ncixus.com (will cost slightly extra)
Portal 2, $34.99 - Limit 1 - http://ncix.com/products/?sku=60724&vpn=PORTALPC&manufacture=Valve&promoid=1336
Call of Duty: Black Ops, $29.99 - Limit 5 - http://ncix.com/products/?sku=57597&vpn=CODBOPS&manufacture=ACTIVISION&promoid=1336
The Witcher 2, $39.99 - Limit 2 - http://ncix.com/products/?sku=61105&vpn=WITCHER2&manufacture=Atari&promoid=1336