The Gan 356 RS2 is another non-magnetic speedcube from Gan, it is only £14 which is a bit cheaper than the Gan 11 Air but doesn't seem to turn as well unfortunately. There seems to be some unfortunate catching with the cube and a lack of corner cutting in some places. Obviously if you are getting a non-magnetic cube then you are clearly on a budget so unless you specifically want the cheapest Gan cube then this cube is probably not worth getting.

Buy it here