I belong to both Crafters Choice and Homestyle Books.
They send me an email when the new selections come out. Usually there is plenty of time to decline the monthly offer. I get both of the offer emails abouth the same time so it is easy to decline. I keep the membership mostly for the special deals they run.
They run some really great offers occasionally. I just bought 4 new books and spent about $30. They had free shipping and 60% of the publishers prices. You can't find any deal better than that. I ordered them on Wednesday and received them today.