Here's a good resource for ammo-searching that I support: http://gun-deals.com/ammo.php. The more people contributing, the better. So register!
What that site can't do well is record local, physical-facility sales. Your neighborhood Wal-Mart may have the best price on WWB 9mm, but mine may have had none in stock for a month. YMMV.
As a bidness sort of guy, what I do recommend is factoring in all costs and distill it to a per-round price. Shipping and/or sales tax is the general biggie here, but if your local Wal-Mart is 20 miles away, these days ya gotta consider the cost of gas.
For reloading, I feel you need to factor in all the component-plus-acqusition costs, plus an amortization of all equipment purchased for the purpose, plus an hourly valuation of the worth of your time. Just me, but the sum of that equation is why I've never gotten into reloading. But there is a qualitative input here: there are really good shooters who handload for accuracy, competition power-factor, or hunting. I ain't that good.
