I've got to be honest, I have quite a bit of experience with the PI and I don't think this is a good idea. The PI is a good all-purpose portable micro-processor but, unless you're running a processing farm with multiple pis, I don't think it'll be able to effectively handle the load of a server.
Don't let me discourage you, though.
I assume these would function the same as roads where they can only be created in neutral / owned / claimed rooms?
Re: Make Price History Available in API
I'd like to bring this back to the surface. I feel like the market is a severely underutilized part of the game. I'm working on buy/sell orders based on price history and managing this right now isn't that great.
My first method was taking orders and averaging them over a period of time. But if orders are infrequent, getting the average is very difficult.
My second method was manually entering my desired order value (buy and sell) every day based on price history. This is manageable for a few resources but updating the average for all resources every day is extremely time consuming.
Adding this to the API would be great. I know it's part of the HTTP endpoint and the recent auth tokens make this easier, but it's still quite a lot to set up.