Is it possible to get a decent VPS for a reasonable or affordable price? That's a good question, and that may depend on your definition of affordable.
Notice I didn't use good and cheap in the same sentence. I have a difficult time coming to a conclusion that something is good in weeks time. I believe you need to give it at least 3 to 6 months, or more before you can confidently say it's anywhere near good.
A VPS is a tough sell these days. Years ago they were the route to go, but now that the price of dedicated servers and bandwidth have come down considerably I personally wouldn't spend very much on one. Why would I want to spend $40-$80 for a VPS when I could get a nice entry-level dedicated server for $60-$120. However, if I could find one for $10 to $25 that was actually decent in terms of resources and power it would be tempting.
One feature that will cost you is a control panel license. For example, a WHM/cPanel VPS license will cost $14-$15 per month alone. Plesk, and DirectAdmin can be costly as well.
Some providers will give you a deal or price break on the control panel part, but generally the difference is figured in plan one way or another.
If you can live without these control panels you can get a pretty good price if you look around. I don't really see the point of spending $15 per month for a control panel license in addition to a $10-$20+ per month VPS plan. Especially if you only have one or two websites that you are going to use it with.
The same with a dedicated server. For instance a WHM/cPanel license will cost you $35-$40 per month for one of these. This wouldn't be a big deal if you were a hosting company, or had multiple sites you were going to put on it. For the little guy or gal that's a little costly considering it's 25-50% of the monthly price.
I have nothing against those control panels, but they do make the price go up quite a bit.
So if you can live without a control panel, or you are willing to use a free one, then you can have yourself a nice VPS server for $10-$25 per month with enough resources and power for most Dolphin websites including your own RMS.
Just be careful if you are selecting a free control panel because some of them are not updated and maintained as well as they should be. There are several that I would steer clear of for that reason alone.
The second thing that will save you a little money is to get a non-managed server. These are usually called unmanaged or self-managed. The drawback is that you don't get any help or support, which means if you break or mess something up you fix it yourself.
An unmanaged VPS or Dedicated server without a paid control panel is not for everyone, and it's something I wouldn't jump into if you have absolutely no hosting experience at all. However, if you and are willing to learn you can get a decent price if you look around and do some research.