$200 gets you 2U and 100mbps in Texas (never used them, but google found
https://www.colounlimited.com/single-server-colocation-rack) - ship them a Synology with lots of drives+initial backup and setup a VPN tunnel to manage it remotely and you should be good to replicate to going forward.
Backblaze is nice because they're not in debt. Backup is quickly becoming a race to the bottom line where it's almost free, and some providers can't maintain their business model long term. Toss in how many folks are using Amazon in the background (Dropbox, SmugVault, etc) and it may be better off dealing with Amazon directly.