Wooo. 50.00, is a lot. I have not done FMQ because of joint pain I use gloves and it helps move the fabric. I got gloves on Ebay for about 4.00 with shipping. I like the garden gloves better than the quilting gloves, they fit higher up on the wrist.
If you buy a darning foot try and get one that is clear.
I have never used silicon spray. Is it worth it?