You might want to counter offer with a lower bid like you said, $325. However, if you really want a Mak, and I can understand that, don't pass up the deal for $25. Three months from now you won't even be thinking of price and will be glad you bought it.
Consider this:
Makarov: $200
2 extra Mags 40
2 Grips 35
ammo 25
holster 10
Total $310
Parts and accessories based on prices (w/o tax & shipping) at
http://www.gunpartscorp.com/Manufact...arov-33376.htm
My Russian Commercial is easy to shoot, consistent and accurate.