Ability to see prices of rented cards#114

Presently we can only see price of listed rentals aka non rented out. Create an API endpoint to help sites like peakmonsters to know the price of rented cards to give people a better idea of the value of cards and help sites help automate listing of rentals.

Could we also find an average cost of each card during peak and offpeak rentals so players could just base rentals on average price as an option? I’d love to say “rent all for average price” or some could make bids to offer 10% less etc