Thanks, everyone. I did decide to complete one series, and got a handful of Star books too---the $4.99 ones, not the $8+ ones
You're right, there is always another sale and I have been adding stuff to my wishlist often. Normally, I do a 100% rebate book every month or so (that's about how often one comes up which interests me) and use that to fund other purchases.
I have about $65 in micropay right now. I am thinking of getting a subscription to Ellery Queen or Alfred Hitchcock but I may wait until January as I have a ton to read right now. What I am waiting for is a free club membership. I bought the last one on 100% rebate (i.e. I paid the club fee and then got it all back) and am due for reneweal soon. I am hoping if I wait long enough, they will offer me a deal to renew it.