I really don't see the situation as a "rip-off" - 12 months seems reasonable and 2 months for 7 pounds also reasonable.
When I started using SP I think the units only lasted 24 hours (I could be wrong on that one) - then it was 7 days. Now it is 3 months. Despite not being completely lost, when they went, you had to buy more to get them back, so you needed to "save up" your searches, which was frustrating.
I didn't like FindMyPast at all when they started - with not very well indexed BDMs. I spent a small fortune finding nothing! That was a true rip-off. I haven't yet been back.
They have many more databases now, so I don't think it would be hard to use the credits in the time period. Thus said, I think I'll wait for the final detail for 1911 before buying anything.
Wonder if Ancestry will try it's own transcription as they did with the Scotland Census?
Trish