Free shipping over $49. I know that's kind of high but maybe you can stock up? I don't know how their prices compare though since I haven't bought it before.
The standard shipping is 5.99 though which cheaper than a lot of others.
I haven't ordered from them before so I don't have previous experience but I have my cart all ready to hit "buy." They do have a lot of positive ratings though.
You won't like hearing this but, you can get 3 bags of 60 liter carefresh from *gulps* Petco for just under $44 with free FedEx shipping. Also, if you look on Slickdeals.net, you can often find online coupons for 10% off or $5 off at petco.com. I ordered 3 about a month and a half ago (before I started using fleece) and paid $39 and some change for 3 bags of CareFresh Natural 60 Litre bags. That's a steal in my book.