That is a high price for titanium coated blades. I use Headley titanium coated from Amazon and have no complaints. I was given a package of Olfa Endurance blades and can't tell any difference in long lasting so I think the price of those are overkill. I like MS blades which when on clearance are a bargain when on a bundle order. Quilt in a Day has 50% off regular Olfa blades often. I change blades a lot so I keep a good stash of them.
I can't seem to get the hang of a rolled hem foot. I watch videos how to use it but it is hit and miss if it works for me.