It depends on what you are doing with it and what you are comparing it to. For 50 Gigs, its extremely cheap.

But if you really say want 5 gigs, then $10 a month seems a bit high, especially now that Gdrive gives you 5 gigs free.

Its also a bit of a pyschological barrier seeing that second digit in the monthly bill as opposed to say $5/month and knowing that the yearly cost breaches the triple digit barrier.

Hypothetically speaking, you could be running on a cheap laptop that you bought used for some $200. One and a half years of using Dropbox would cost about the same amount.

Realistically though, I totally agree.

It will double the cost of a typical consumer laptop ($500 laptop used for 4 years) or add a third to the cost of a high end $1500 laptop.