When you are ready to sell your wine there are several ways options available to you. You should consider these options before you begin your investment, so that you can estimate the transaction fees and other costs that will impact your overall financial gain.
Before describing these selling options, you should be aware of the US alcohol laws that may impact your ability to sell. All alcohol laws, except importing to and exporting from the country, are driven by state legislation. Therefore, your restrictions on shipping, selling and sales tax tracking vary in each of the 50 states. For example, some states will seize and destroy any shipments that are not legally authorized, and other states prohibit unlicensed individuals from selling wine (even to friends) by issuing fines and prosecuting misdemeanors.
Wine Retailers - There are thousands of retailers that are capable of selling your wine, but only a handful of retailers in the US specialize in selling investment grade wines. Most retailers are familiar with the alcohol laws in all 50 states and can tell you the restrictions that exist with their licenses. Internet retailers have a broader customer reach than local brick-and-mortar retailers, which can be helpful in selling your wines quickly. In exchange for a 20% (on average) commission retailers will market your wines, manage the buy/sell process and advise you on market pricing. Typically you will also be responsible for the transportation costs to the retailer's site. Reputable retailers will only work with clients that have good provenance history, and they will thoroughly inspect your bottles prior to listing them for sale.