If you want cheap PR4 and PR5 domains with some links, check out:
http://www.freshdrop.net/
They go through the TDNAM (from Godaddy) and they usually have quite a few PR4 and PR5 names available for as little as $5 + 1 Year domain registration cost.
I have been using them alot as you can get the same or better deal on a domain with
PR through them compared to buying at a forum.