I dont know alot about this puzzle but a collector is willing to sell it for £15 can anyone tell me if this is a good price and if there is a video on it please?

Thanks in Advance
Kyle

I have one and I think that it isn't rare, I got it on Ebay for around 7 Euros. It's just a 3D sliding puzzle, if you would like, I can make a video

Thanks ive already bought it its so fun to solve