Two native-looking chips to the RIGHT of “Ordenar por:”. Selected = green + bold + stronger outline; width locked with fractional measurements to avoid layout shift. Simple display:none filtering.
Tested with Tampermonkey v5.3.3.
This script places two buttons to the right of the sort by dropdown list. Each button does this:
Ocultar reservados (hide reserved): hides from the results the products that are marked as "Reserved". They could have been purchased or not, and paid or not. The seller can set it too.Ocultar no reservados (hide not reserved): hides from search results those products that are not marked as "Reserved".Both can be selected or deselected independently. Both disabled by default (show all results).