Cos anything white is cheaper due to the dying process… Say 2000 white pellets for white but 1800 white and 200 black pellets for black.
As white pellets are the cheapest due to the white chemical (can’t remember it’s name but it’s so so plentiful) being so so cheap to produce. So all plain white things are the cheapest to make…
Some companies bring the price if the white item up, so all varients are the same price. So there’s a bigger mark up on white over coloured. Some colours donxost more to produce, so outside of white n black (the standard colours) each colour costs more.
It’s worth waiting for the dust to settle, and then often a coloured version will be dropped cos they’re not selling, and unles your THAT bothered by colour, you can often get it cheaper.