The Market Price is the best listed price for a wine in the secondary market. Unless otherwise stated, it is standardised to 12x75cl.
How it is calculated
To calculate the Market Price, we look at list prices from a large group of trusted international merchants. Preference is given to prices from stock holders over brokers, to cases over single bottles, and to recent prices over older prices. The algorithm behind it runs every day, evaluating a pool of over 1 billion data points to determine the most accurate Market Prices for 240,000+ wines.
The Market Price is based on standard bottle sizes. For most wines, this is 75cl. Occasionally, such as for sweet wines, different bottle sizes are included in the calculation if they represent the majority. Merchants looking to value non-standard bottle sizes may revise valuations up or down from the Market Price based on their experience of current market conditions.