AWS has their own competitive service against DigitalOcean called Lightsail. Their cheapest plan is $3.50 month (512MB/20GB SSD), the bigger plans are roughly similar in pricing and features to DigitalOcean.
I spend roughly $120/m with DO and have done for the last 2 years. I have a majority 5 usd droplets and 1 20 usd droplet.
LightSail may be the way to go for now.
Here comes all the migration work.. Fun :)
Personally, I have more instances on vultr and linode, but I still keep an instance at DO so I have a reason to keep tabs on them. I have no qualms about recommending their service to others.
Sticking to DO!
It grinds to a half if you use up your compute stipend and you cannot do anything about it. That's a big risk for a VPS-like use-case.