Evaluate Liquidity Before Making the Purchase

Identify who typically buys the exact property type, watch reference or automobile specification and what evidence those buyers expect. Rarity can increase desirability, but it can also reduce the number of qualified buyers.

Separate broad interest in a category from demand for the actual asset, condition and price range under review.

Dealer sale, auction, consignment, direct sale and brokered transactions involve different timing, fees, exposure and certainty. Estimate net proceeds rather than comparing headline asking prices.

Include authentication, inspection, transportation, preparation, commissions, taxes and the cost of holding the asset while it remains for sale.

Model an orderly sale and a faster sale. The difference helps reveal how much value depends on patience, market conditions or a narrowly matched buyer.

Completed transactions deserve more weight than unsold listings, but every comparable should be adjusted for date, condition, documentation and transaction terms.

An illiquid asset may still be appropriate for a long-term owner with adequate reserves. It becomes more problematic when the purchase depends on a quick resale, refinancing or a narrow profit margin.

Write the expected exit path and downside price before acquiring. Later changes should be decisions supported by new evidence, not revisions made to justify remaining invested.