Arq Premium supports up to five computers, and if you need more than the included 1 TB of storage, it’s an additional $0.00599 per gigabyte each month (which amounts to about $6 per terabyte each month, making it more expensive than Backblaze and IDrive for data hoarders). If you like to configure software to meet your specific needs, Arq Premium, available for Windows and Mac, offers far more customization options than Backblaze or IDrive and costs less than both for 1 TB of storage.