Hello!

I've been checking out the mod lately and have been enjoying it so far! Would you be willing to add a config option to allow the cost to increase for every slot you unlock? Basically, the first slot would cost 1 item and then you could double that every time (1-2-4-8...etc) or just make it 1 more each slot (1-2-3-4... etc)?

Thank you very much!
Darkosto