Do the trick. Put the Curve in your cart, get all the way to checkout and remove it. Then do that with the Pro version. Get pass the shipping quote and then go remove it. Put the curve back in cart and leave it. It alerts them somehow and you may get another discount thrown your way lol.
This thing has 100% corrected my heavy heel striking foot stomp pace. Learned how to reach with toes and pull with hamstrings , less energy and faster mile sustained. Solid investment. Will be giving it a weight test in a bit, EMOM walking with 150lb sandbag on shoulder. Me+ bag = 340ish