Saiga 7.62x39 AK47 mags...help

I am ignorant when it comes to the Saiga 7.62x39 AK47 mags.

Are Russian steel (such as "razor spine" 40rd) and
the Surefire Saiga mags the best and most reliable for the Saiga AK47??
& what do i need to know when buying Saiga polys?
(I just need 30rd and 20rd)

Is this top quality:
http://www.mississippiautoarms.com/index.php?main_page=product_info&cPath=223_228&products_id=140

Why would anybody pay $37 for an AK mag?

www.Saigastock.com is the best out there - poly, totally reliable for Saiga firearms. I have Chinese BHO steel mags that work, but i want poly mags that won't fall out.

Your money and I always say get what you want.

FWIW, you can get bulgy waffle mags for ~$23.
Even that is steep but they are damn good mags.

$37 for an AK mag is nuts though. Just MO.