i wouldnt rate the blue/yellow for more than a regular e2 karni. the 05's with the mp4 and e2 stock tend to go for around $450-500, kinda just depends. they werent a "rare" color or anything as they did quite a few in wacky color schemes towards the end. more just "less common". kind of like the black/olive one i had:
oddly enough mine was the only one ive ever seen that came with a black back block and asa, most of the olive ones had those parts in olive as well.
it sure treated me well though. anyone know where karni #4441 has went to?