Looking back at the whole discussion, I notice two things:
a) The concentration on "VPS spec" as if the VPS will deliver on its own. There is an administration part, which has to be done by people.
b) The jump from 10 USD to 50 USD per month for a VPS is considered prohibitive. What is the factor if you compare the totals; VPS plus the wage for maintaining it? In case the cheaper VPS meant more trouble, what would be the new factor?