Upgrade your existing account through referrals, each referral adds 500 MB to your account and you can get up to 16GB (initial 2GB + 16GB bonus = Total 18GB).
How to get the referral link?
Log in to your dropbox and get your personal referral link:
Referrals can get you maximum 16GB extra storage. In case you've already referred some friends, my service will fill up your extra storage to the 16GB limit.
Note that it's not "increase 18GB" but "Increase to 18GB"
Good seller with a smooth communication. I recommend this service!!!