On the 2220.80 and earlier Seamaster Pro models, the bezel is only available as a complete assembly with the outer metal part of the bezel too, you can’t buy just the aluminium bezel insert alone. That combined with the high rate that they get scratched and scuffed means a lot of sellers don’t buy the expensive full Omega replacement and just buy a $20 aftermarket replacement instead. Those aftermarket bezels have some color and style variation in bezel pip, the original has a raised metal ring with a lower lume plot inside of it.
These are an example but there are a lot of variants (not authentic Omega but aftermarket)
https://www.ebay.com/itm/170766130763