The YJ GuanLong Pyraminx is a new puzzle from YJ, YJ have recently begun releasing new versions of puzzles under their Guan series with slightly improved designs and even lower prices than previously. The main comparison here has to be the MoYu MeiLong Pyraminx as they are both £5 and I think the YJ GuanLong Pyraminx may potentially be slightly better, both have pretty good tips and a mechanism that makes the puzzle feel slightly magnetic despite the complete lack of any magnets. The reality is though that if you want a budget pyraminx you really should just spend the extra £2 and get the MoYu RS Pyraminx which is magnetic and turns a lot better anyway.
If you want to try the YJ GuanLong Pyraminx then you can buy it here