As there are many brands who offering mechanical keyboards. But the main challenge with all of them are price and quality. I experienced this product MK3000 keyboards and find very good build quality.
As they have very low price for the mechanical keyboard and of course this would be the very attractive mechanical keyboard for the games and general purpose users in low price.
During my testing I found the key are very very smooth and typing tic tic sound effect impressive. It comes with one year warranty.
This would be killer mechanical keyboard.
Here you find this product : MK3000