dimensions 1 3/4" square base, 1" deep
or 4.445cm square base x 2.54cm deep
£2.50 per sink or £20 for a pack of ten (I have quite a few of these) + shipping.
A pack of ten should easily ramsink two graphics cards (to give you an idea, the copper tweakmonsters cost around £25 for 8, and they're about half the base) and have some left over. Or use them for random cooling projects.
Email me or post here.
I'll ship these overseas quite happily.