Just wanted to chime in that if you look at the Buzzerblog GSN schedule for the first week of August (you'll need Microsoft Word in order to view it), you'll find out that come August 6, Perry's Card Sharks in the early morning rotation will be going all the way back to episode #001.
Gee, it seems that now, GSN is only leasing for 200 episodes of a G-T show. Before March 2009, the way it worked was that for any G-T show on their schedule, they had the rights to almost all of the episodes (with some exceptions), and for fremantle shows that aren't G-T like Press Your Luck for example, they would lease for episodes in "add-on" packages. In that shows' case, at first they only had the rights to 200 episodes from February-November 1984, but that soon expanded, and from 2003-2009, they had the rights to 450 episodes (February 1984-November 1985).
No one to my knowledge brought this up before, but do you suppose the reason (or at least part of the reason) GSN decided not to renew 90% of the G-T library was due to the recent economic downturn?