@dkid14 - I would be interested in hearing about how this plays out for you over the long haul. I have rented my entire deck out. I split the DEC earnings with the person who plays the account and also pay him for 1/2 the DEC value of the cards. Overall, it has been a good deal for me. My biggest gain so far was a legendary gold card.
The earnings are constant and I don't have to worry about renting out card by card. My primary goal was to reduce the amount of time I spent on Splinterlands. I still have a silver level deck that I play.
Yeah rentals are hard to manage as far as prices go because they go up and down. I have one deck rented out like you do but I think this is better for some of my extra cards. I really hope the player base grows this year.