At a previous company, we literally did that, and also had to get our VM limit increased. But it only gets you so far, its a cost optimization at the low end,

At a previous company, we literally did that, and also had to get our VM limit increased. But it only gets you so far, its a cost optimization at the low end, but eventually it isn't "worth it". You are checking your bandwidth use against the pool limit, then spinning up a new VM when you get close to the limit, but then back down the next month so you aren't paying for unneeded bandwidth, paying the extra $5 and not worrying about some custom price hack is a lot easier and less stressful.