You may consider Raidentech (not local, but that means no sales tax). Not everyone's favorite, but I and others love their prices. Here's an example or two.

http://www.raidentech.com/3868-1-tank.html

http://www.raidentech.com/upgrade-38...iakv-tank.html

Free shipping coupons for Raidentech are readily available on the web, so that takes care of that problem.