I have the Simplicity bias tape machine and the strip cutter. I hardly ever use the strip cutter as I use my accuquilt dies for that.
The bias tape machine is OK if you have lots of bias tape to make. If I remember right, the new price was about $150 and the different size heads were about 22 to $24. each I have used the 2 1/2 the most, but I did get all the sizes. The way it works, it has a heating element and the fabric folds and goes across the heating element, kind of like pressing it. Do I think it's worth the price. Probably not unless you are making lots of quilts and needs lot of binding. I find the bias tape foot that goes on my sewing machine or serger does a lot better job if I am doing potholders, etc. For quilts, I just fold the strip of fabric in half, press and sew on. I haven't had any problems getting the fabric through the bias tape machine, but I 45 the joining seam and press them open.