If you can stretch your funds i would say go for an 06 Ego as the parts etc. are easier to come by and alot changed for the 05 model to the 06 and "most" of the internals are similar to the ones in the newer model... have a look at the below link think it might be in your price range man....
http://www.p8ntballer-forums.com/vb/showthread.php?140166-Ego-Sale-09-08-06-05/page3
http://www.p8ntballer-forums.com/vb/showthread.php?141538-EGO-06-Black-spares-oil-(new-noid-and-eyes)-OFFERS
http://www.p8ntballer-forums.com/vb/showthread.php?140166-Ego-Sale-09-08-06-05/page3
http://www.p8ntballer-forums.com/vb/showthread.php?141538-EGO-06-Black-spares-oil-(new-noid-and-eyes)-OFFERS