I am selling (sold) the vast majority of my 5800 series GPU, and replacing them with 7000 series GPU.
One can get rid of 5800 series quite easily now, (Ebay, first round, $145-180 for the 5870's. Some bought at my buy it now at $180 almost immediately).
When/if BFL delivers on the ASIC within the ballpark of stated specs, one will not be able to give away 5800 series GPU.
Gamers will not want them (2 generations old, and the 8000 series is coming up(?)). The market will be flooded with them, as miners try to sell them off.
When I get ready ready to switch over, I will have no problem selling 7000 series GPU to gamers.
One can pick up a new XFX 7970 at Newegg for 429.99 w/ free shipping at this point (there is a HIS model that comes to 399.99 after rebate!), yet somehow people are sill buying them on EBAY for more.
Yes, I lose a bit of hashing power, (2x 5870 ~ 800-840 MH, 1x 7970 ~ 650-700 MH, on the other hand I was able to pick up my first 7970 for $325
) but I will be able to more easily recoup my cost when the bottom falls out of the GPU mining market.
Just my .0002 BTC on how I am protecting my investment during this uncertain time.