That is good to know!
The $45 harness is for ROW to add OEM-style wiring from Central Electronics Control Module (CECM - located under front dashboard) to allow LEDs to function. This harness will adapt all features.
ROW wiring is different from NAR and the $40 OEM wire harness is required to get LEDs working on ROW vehicles. The $40 harness does the job of allowing LEDs to function & add all features in one harness. Nice!
NARs don't need the $40 as they can be fitted without any harness or coding but will be limited to halogen-style function (no amber turns, no fogs, LED brightness is high*coding can assist brightness)
I've seen wire splicing/modifications with coding changes to get full functionality without adapters but that is beyond the scope of this post.
Finally the $60 harness is for NARs to add all features for LEDs to function properly with ambers, fogs, ect.
*I should note that BEC harness is not the same as other harnesses such as DAP or ECS.
I found
THIS ARTICLE to be useful in comparing features of different harnesses available for retrofitting LEDs in NAR vehicles.
Feel free to correct anything I've misunderstood