There are some less inexpensive option for fitted type diapers.
Such are www.babybunz.com for the snugglebottoms or prefitteds (prefolds converted to a semi fitted diaper w/ elastic that is less bulky and easier to use than a prefold but doesn't require $10-$20 that a regular fitted does. PM me if you need more info)
Or contoured diapers.
That said, prefolds DO have a learning curve. I don't that that I would have attempted trying to learn to use them right after...