Ale pails are cheap - like $18 with grommeted lid. If your LHBS are nice guys they should throw in a 3 piece airlock for free. And once they seem suspect after somewhere between 5 and 100 brews, you can use them for grain storage if you buy a different lid w/o a hole in it for another $2.
It's nice to know you have coolers available though. If they are new and haven't had gatorade and crap in them, you should start building a mashtun / hot liqueor tun combo like Northern Brewer sells for $250.
Edit: The mashtun is a great idea, I have one I made myself. However, you really don't need an entire 10 gallon cooler with ball valve dedicated to simply storing really hot water. But, believe it or not, some people get carried away with their hobbies.
'Allow 6-8 weeks for delivery'
Thinking about: California Common, Fat Squirrel Clone
Fermenting: Greenbelt Pale Ale
Aging: Strong Scotch Ale, Robust Porter