Ammo prices
 

Hi can anyone tell me where to go online for good prices and good quality ammunition in particular 7.62 39 and 9 19 mm. Also who makes the best aftermarket magazines.

It is not just one place, but a link that keeps track of what is on sale and who has the best price on the cal. you need.
Click this link.
gun-deals.com - User-Submitted Gun & Ammunition Deals
Then click on the ammo deals tab.

For aftermarket magazines any thing but not Pro-mags. I have not found a good one from them yet.