3 Port USB 2.0 PCI for $20.00 at CompGeeks

[TechDreamer]

This is new at CompGeeks and is not on special, so you can use the Mastercard 10% discount.
Link

 

[SimMike2]

This looks like a pretty decent deal.

 

[Xanthguy]

Also, at Jumpondeals, you can find a code for another 10% off. Don't know if these are stackable, but it's also an alternative for those without the mastercard offer.