What camera did you have? What features does it need? Depending on what you want, there are plenty of good digital cameras on the market for $100 or so -- they are mostly last year's model, or refurbished cameras, etc. But last year's digital cameras still take great pictures.
Once you've bought several disposable cameras, you've paid for a new digital camera of your own.
(If what you really need is a professional D-SLR camera, then this doesn't help. But then I don't think you'd be happy with the disposables, either.)