I find that diaper services cost a bit. I'd rather slowly build a cloth diaper stash myself (some used and some new) and then sell the diapers once I was done with them.

I really recommend Cloth Diaper Trader. There's a lot of Canadian sellers on there and you can get some great deals (just make sure to check the price of new diapers before buying used because from time to time someone wants a little too much for their diapers).

Also, Cloth Diaper Trader has an awesome giveaway on right now on their blog (prize: $500 cloth diaper stash + $300 PayPal cash!).