What country?
Do you have AMAZON?
I do not represent the company in anyway... but Aigo fans are pretty OK...
Its not the best, but they do push a decient amount of air @ very little noise.
Most RGB fans will be proprietary...
But what are these fans for?
Just to move air? or they being placed behind a radiator or heatsink?
If thats the case, you may want something else without RGB, as those LED's will add some heat, which is something your trying to get rid of on your heat exchanger.