The Submariner is the reference point for the whole pre-owned watch market. Dealers quote it, indexes track it and buyers compare everything else against it. That visibility cuts both ways: a Submariner can be priced within a narrow band and sold in days, and there is very little room to ask more than the band.
Steel is the part of the family that trades above retail, because steel is what authorized dealers ration. The current no-date 124060 and the 126610LN Submariner Date both change hands above list. The green-bezel versions — the current 126610LV and the discontinued 116610LV, known as the Hulk — carry premiums of their own.
The previous generations sell below today's models, by more the older and less complete they are. Two-tone Rolesor and gold Submariners are a different market again: less rationed, priced far higher at retail, and trading at or below list, so the gap is larger in dollars.
Condition is priced sharply because buyers have so many examples to choose from. A scratched or faded bezel insert, a stretched bracelet or a heavily polished case moves a Submariner from the top of its band to the bottom.