If I want to sell something of highish value but not sure many will bid I start at a highish price and keep re-listing until gone.
Win: I’ve bought a few top turbos (Elite RealAxiom/RealPower) in the Spring when no-one wants them, used them for a winter or two then sold them early winter for £100s profit.
Lose: Bought a set of wheels with newish tyres for my Puma for quite a high amount as desperate when I bust one hitting a pothole assuming I’d be able to use the others when my current tyres worse out. Ended up barely using the car for the next few years as working in London so travelling by train. Then had a baby so changed the Puma and struggled to sell the 3 remaining wheels.