Free space: 5Gb (90-days trial)
Paid plans: from 7.49$ monthly

Brief overview

Sugarsync is cloud storage provider that allows to synchronize your files across any kind of devices and operating systems. It offers rich set of features: Online Backup, Folders/File sharing, Sync Multiple Devices, Security & Protection, Mobile Access. Windows client can help you to backup all data to the cloud whereas iOS and Android will help you not to loose any photo or some another data on your mobile phone. Sugarsync is aslo quite good team collaboration service. Originally SugarSync offered 5GB free plan, but from February 2014 it moved to pain-only plans. (5Gb plan is still available but under 90 days trial license.)

Pricing

60Gb - 74.99$ yearly or 7.49$ monthly
100Gb - 99.99$ yearly or 9.99$
250Gb - 249.99$ yearly or 24.99$ monthly
1000Gb - 550$ yearly or 55$ monthly
Custom Plan - individual prices