I have joined and quit and joined One Spirit book club several times. My tip is to order all your books online on the day you join and then cancel your membership online as soon as the books arrive.
Usually they have a special half price on the first book you need to buy, and then you just buy the two others or however many it is so that you can fulfill your obligatation.
I learned to do this years ago because I don't do well with monthly cards.
But, if you do happen to go the monthly card route and you are sent a book that you don't want, just write "refused--return to sender" on the unopened box and put it right back in the mailbox. You will not be charged.