I don't own a Saiga, but I do have or had numerous HK G3, Sig AMT, FN FAL, Valmet and other high end .308 "battle rifles". One perspective is that the Kalashnikov pattern Saiga in .308 isn't what you'd call a proven battle rifle, and that has a bearing on value and desirability.
I kind of like the way the Saiga .308 looks, assuming you got the hunter style stock. It reminds me of the Valmet hunters... and would be a suitable rifle for that purpose, IMO.
What did you buy it for, and why haven't you shot it yet? The answers to those questions will probably provide an answer to your current one.
Cheers,
C