[benologist]

Impossibly vague question + the price will rarely have anything to do with a startup being a "good idea" and may not even correlate to growth.

[dexterchief]

Fair point. Assume a vanilla Rails app, with RDS for the Database. Perhaps a configuration something like this:

https://medium.com/@jatescher/how-to-set-up-a-rails-4-1-app-...

[benologist]

If you don't really know what you're building or how you will build it then you don't have the information you need to figure out how much it will cost to host. It's anywhere from $0 upwards.