The trouble with egos is that 08s are now 560 new and with the 09 sitting in at 770 it leaves little room for a sellers market.
In terms of 08s I wouldn't buy one second hand unless it was in mint condition and at least 100 less than new. Any more than that and putting up the extra £ for an 09 marker that will be cutting edge for the next 2 years and in a years time have a 2nd hand value for £450+. Egos have the best resale value of markers bar very limited/rare markers.
I had a look at an aftermath lazered 08 on the nation. $900 ono for a custom pro owned gun.
That said the 07 for me is still my favourate. I'm thinking of upgrading it to 08 spec as far I can. Not that it needs it but i'm bored.