Here's why:
* Model Specificity: There were several variations of 3-wheelers Yamaha produced in the 1980s. Knowing the exact model (like Tri-Moto, Tri-Z, etc.) is crucial for valuation.
* Condition: "Mint" is subjective. Photos and a detailed description of its condition are necessary. Even minor wear or modifications can impact the price.
* Market Demand: The value of vintage vehicles fluctuates based on market demand and collector interest.
* Location: The geographical location of the seller impacts price.
To get a better estimate, I recommend:
1. Research: Look for similar models sold online (eBay, Craigslist, specialized vintage motorcycle sites).
2. Contact: Consult with a reputable motorcycle appraiser or vintage Yamaha enthusiast.
3. Compare: Compare prices from different sources, keeping in mind the condition of the vehicles.
Remember, even with thorough research, the final price will depend on the buyer and seller.