Should I use Amazon S3?
yesimahuman: Ah yes, a 150MB file site.  Whenever I need to get my 150MB files, I'll go to your site!In seriousness, I don't know what the price for amazon ec2 works out to be.  However, during the development phase, it is too expensive.  I believe it will cost you $72 to run an instance for a month, base price.  I would suggest something like slicehost if all you need is a low power server instance for development, and then look at ec2.