Yea, even if you spend extra, and go all out on a nice Truserv RAID'ed racked Dell with Hetzner, you can push more sites/clients on it and have full control over it, srsly, my servers in the last 8 years never experienced any downtime except for this one DNS Server issue I had which was resolved within a few minutes (if the service crashed for any reason it didn't restart, it just stopped indefinitely, I just made it restart each time it crashed IF it crashes)
But ye... Go to WA's forums, then check out the notifications on the number and amount of downtime they experienced over their email/hosting services. Then compare it with how much less of a headache you would have had with your own dedicated server. It would definitely be worth R3500 wouldn't you think? And then you have a proper ****ing machine dedicated to you and you alone