Really depends, but paying 50% for a used speaker even 2 years old seems too much to me, let alone 14 years old.
In terms of parts, electrolytic caps wear but are cheap to replace. In the 21st century finding top end drivers with amazing extension and smoothness is straight forward, and simulation tools make really poor crossovers like old Genesis/Infinity speakers inexcusable today. Thinking of a couple of modern brands here ... 🤣