It will save you a fortune over time. It’s a big upfront cost, and I recommend registering for it beforehand to try and get some for free from generous friends and family.
We specifically use cloth during the day and disposables during the night since we don’t want to wake him up to change him in the middle of the night and disposables are more absorbent.
So, we’d save even more if we changed him at night but that’s a cost we’re just willing to swallow.