Typically, brokers who offer this feature limit the amount of
virtual money allotted to each demo account, usually according to the various account tiers.
Close in nature to concepts like Amazon Prime, in which members have a pre-determined number of ebook checkouts for one annual membership price, Freading allows libraries to
allot patrons
virtual tokens that are exchanged for borrowable titles, tokens that are bought with actual
money by the library, as opposed to a flat subscription price for using the catalog.