This is interesting...and suggests that prices have largely stabilized.
http://www.thefirearmblog.com/blog/2014/09/29/ammo-prices-summary-03282014-09262014/?utm_content=buffer4764e&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer
http://www.thefirearmblog.com/blog/2014/09/29/ammo-prices-summary-03282014-09262014/?utm_content=buffer4764e&utm_medium=social&utm_source=facebook.com&utm_campaign=buffer