Depends you can limit vps just like shared accounts. But they take more resource to run. Why not just do regular shared? The only difference is root access and more load on the server. Most hosts will run any ssh needs for you, which is probably safer.
With that said our VPS is $99 and only has three per server. Most services put around 100 on each server.
You can get advanced hosting for $6.95 that is better then most VPS at
www.adult-website-hosting.com it's DWHS's adult partner.