Here you can buy an incubator for 1000 Credits and come back and use it anytime. Or you can rent one for 500 Credits but you can't come back and use it again unless you pay the 500 Credits again. However breeders don't need to pay the 500 Credits to rent one or 1000 Credits to buy one they get a free one that works as well as the paid for ones or rented ones.
