Our LQS offers 4 or 5 blocks of the month, which they sell for $1.00 per block. If you want to buy more quilt patterns of the BOM, they are $3.00 a block. The catch (if that is a correct term here) is, you must pick up your BOM each month. If you miss a month the block is $2.00. My DIL has made several of these quilts and they are really beautiful. They use the thangle PP method.
What this does for the shop is - it brings quilters in every month and I don't know about you but every time I go in I buy something else. They also offer "finishing" pieces. I am not sure what that means as I live in two states and have not done one of these quilts myself.
The shop is Pieceful Hearts in Naperville, Illinois. One of the best shops I have ever been to. Good luck.