I hope I'm not mixing up my subscriptions, and I know that AP has been the worst, as far as deadlines go, but I would think of 2 a month as a loose ballpark figure at best.
I've actually had Elusive Disc hold the remainder of my subscription for the time being, and I can pay for all of them when it is finished, or decline the remainder.
I like to keep my credit card payed off and I got tired of always checking to see if there were charges made to it. I thought I would have to cancel outright, and was surprised they were willing to do this to be honest. Elusive Disc is definitely very accommodating and I recommend them.
Also I've only heard needle drops of a few of the releases (I have no vinyl rig; I've commissioned a friend to transfer them to digital, back before the XRCDs were announced) but what Ive heard is excellent.