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by lsb 5885 days ago
Here's something interesting about the pricing structure: if you get a spot instance, and bid like $5/hr max for it, you won't get overbid for it, and your hourly cost is going to be far less than outright buying the reserve instance itself if you need it longterm.
2 comments

you won't get overbid for it

... unless the people who bought reserved instances for disaster recovery decide to start using them. If one company's disaster recovery plans kick in, it's quite likely that many other companies' disaster recovery plans will kick in at the same time -- and spot instances will suddenly become very scarce as they are reallocated to the people who paid to reserve them.

We use spot instances a fair bit in this way. It has worked out pretty well so far.