Clip Zip reviews: http://forums.sandisk.com/t5/Clip-Zip/Clip-Zip-Reviews/td-p/242614
When I checked at Amazon.com yesterday, it had the full offering of Clip ZIps available. The 8GBs were going for the full retail price ($70); some 4GB colors were going for below full retail (around $42) while others were at the full retail ($50).
Note that the SanDisk store has the full range of Clip Zips for sale, and through Sept. 6, is throwing in a free, nice, black storage case (retail value $15) and free ship. Plus register with SanDisk before ordering and get 10% off your first purchase. All in all, a nice deal.