I have two lots of ten new in package C-Products 30 round 7.62x39 mags for sale. The catch is these are the early ones so you will at least need to replace the springs with Wolf AK springs to get them to function.
At least that is what I did with a few others from the same batch. Other mods may help too, search the forum for those as I did not try those. If you buy these, you do so knowing you will have to tinker with them and they are sold as is.
In any case, the price is $64 shipped for 10. Thanks for looking.