I always thought it was a shame that Dropbox never had a tier between its free tier which is not usable and its first paid tier. I would've gladly paid around $3, $5 for a few tens of Gigs of storage, but the almost $10 per month is too much. Then Apple iCloud came and filled that gap beautifully. So I give them my money.

I feel like they left a lot of money on the table.