As a guy who has purchased many a rope routines...If the method on the 3 to 1 Rope Pro is of an 'attractive' nature, which I believe it is...I've never seen gimmicks like this work up close. You need at least 6 feet away even if the gimmicks are good. Perhaps these are...but you still can't let someone look at the rope afterward.
My advice would be to invest your 40 dollars into Fiberoptics Extended by Richard Sanders.....He does all the effects you see on the "pro" video...except the finishing in one piece restored...but it doesn't matter...he has at least 5 different routines...you go from uneven pieces to same length and back to uneven. He has a two rope routine though too and even a sliding knot...and all can be examined before and after...and done up close.
Others all good are Tabaray's and Daryl's; however if I found 40 bucks for FiberOptics is/was the best value.