The only webservice I pay for is DabbleDB. Dropbox I can live with the restriction, but you absolutely need a database when you need to track a large amount of items.

I'm REALLY suprised that there are not cheaper alternatives to DabbleDB - if there had been anything a bit cheaper or a bit more ajaxified, I'd have gone for it.

Also, the main reason I don't pay for dropbox is that you need to pay for EACH user! So at just 5 users I'm paying $50 a month. That's crazy wasted money!