Yup, I've seen this happen before. They've saturated the market with this influx of Russian SKS rifles and Czek ammo. The distributors and retailers have a fair investment tied up and they need to get some of their money back.
Same thing happened with surplus Garands, Enfields, Martinis and Mausers.
I'm still surprised that the RC mausers, Yugo rebuilds and Mosins are commanding the prices they do. It is a pleasant surprise though as it makes the rifles purchased years ago look like good investments.