Local Targets have the large 5 day coolers 75% off. Normal price about $60. Sale price is $15. These are the ones with the half lid built into the lid. I picked up an Igloo 5 gal 3 day water cooler for less than $4. Other coolers at different sizes on clearance also.
the one in the link here:
http://www.target.com/gp/detail.html/ref=br_1_6/601-1963169-0325733?%5Fencoding=UTF8&frombrowse=1&asin=B0001DI436
the one in the link here:
http://www.target.com/gp/detail.html/ref=br_1_6/601-1963169-0325733?%5Fencoding=UTF8&frombrowse=1&asin=B0001DI436