Hi,
I was looking in the AWS amazon to host my shard, and obviously the machines costs more for the available RAM.

So, just for curiosity, how much memory ram your shard is consuming? Mine, in development, is consuming 198mb of RAM. But I know will get much more when objects, players and NPC's enter the scenario.

I'm hope someone with a full shard running and users playing can answer this question.

Almost 2gb by me.
As far as i know it completely depends on your "data" size

Take your data folder, and double the data files size to know how much RAM you need

thanks!