Just get them. I didn't have much trouble convincing DP, I said this is how much it will cost in disposables, this is how much it will cost in cloth. Sure it is extra work, but they are nicer and cheaper in the long run and last as many kids as you want!
I have got my whole stash of excellent brand name nappies 2nd hand (not everyones cup of tea, but they are in excellent condition) for $250. That is a huge saving on new cost.
But who knows, bub may come along and I may hate them, time will tell!