Yup, I tried that approach a long time ago, and finally realized you have to build in some wiggle room. It appears to be human nature for buyers to want to get some reduction in asking price, even when it is a great deal at full asking price. I,m programmed that way myself.
That can certainly be an issue around here, but it was interesting when Colorado legalized pot. Then the Subarus were suddenly going unusually fast in the AM - only to slow to a crawl after having visited a dispensary.
Here it is Subaru and Wrangler. I will damn near drive a family off the road, to get in front of any Jeep Wrangler, the single worst on-road vehicle ever built.
When people would haggle the best price I could give them I would start to raise my price.
Never really needing the money for any implement or item I'm selling, I usually just tell the seller to offer me whatever they think it's worth. Roughly 10 times out of 10, they offer more than I would've asked for, to begin with. When faced with the opportunity, most good people are too embarrassed to lowball someone, in my experience.
A relative was an EMT on the local air ambulance. He says that his biggest customers were bikers. Second biggest was Jeep drivers.
I would have put ATV'ers/snowmobile riders (especially inexperienced ones on rental units) pretty high on that list. Seems hardly a week goes by without an accident or three with them with excessive speed and/or unfamiliarity with the trails/equipment a major contributing factor.
My MIL worked as an ER nurse in the great lakes snow belt. She saw at least one snowmobiler almost fully-decapitated by livestock fencing. I had a buddy hit a deer at high speed on another.