Having put 27,000 rounds of 9mm, 4,000 rounds of .45 ACP and 1,000 each of .223, .308, .30-06 and 300 rounds of .375 H&H away about 4 years ago, I believe that I am "all set" for the time being.
If you haven't put some extra ammunition aside at this point, now may be the time to do so. .
While current prices are most certainly quite high, the metals commodities show no sign of regression well into the future (especially with the emerging markets in Asia) and assuming average rate of price increase of just 15% per year, which is not an unreasonable asumption to make, ammunition will double in cost about once every 5 years.
This means that if you are paying $12 for a box of 50 9mm 115 FMJ's today that come mid-2013 you'll be forking over $24 or more for that very same box and come mid-2018 that price will double again to become $48.00. Since most of us will not see a similar increase in our paychecks over those same time periods, anyone can see that the implications are obvious.