If the postcard collection is filled with topicals, it may need to be sold together to get a higher price. This means that the postcard collector is dedicated to 1 kind of card, which may include rare cards. If the collection is region specific, such as the New York skyscrapers, you may want to sell them in or around New York. If any postcards originate before World War II, they will be more valuable. Set those postcards aside from modern versions and sell them individually. If the postcards are in poor condition, but originate after World War II, you will likely want to sell them together, in bulk. Buyers may want them for reuse in art or other projects.
Pay attention to the selling prices, rather than the asking prices on sites like eBay. There are usually discrepancies, which can help you calculate a good price.
It is a good idea to pay the extra money to post 2 pictures if you are selling individual postcards. The buyers will want to see the condition of the front and the back. List any messages, stamps or postmarks on the back side of the card. Be honest with the condition, or you may find your postcards returned from the buyer. Place a short description of the image in the title of your auction post. Your post may say “Empire State Building Postcard 1933. " This will lead people who invest in topical cards straight to your auction.
If you consign your cards to an auction house, you will sign an agreement with them, then ship the cards securely. Upon receipt, they will describe the cards and tell you the lot in which they will be auctioned off. They are likely to split the collection into valuable cards to be sold singly and less valuable that will be sold with other cards in bulk. An auction house will often ask for 30 percent of the profits. If you sell your cards to the auction house outright, they will ask you to ship them the cards. They will offer you what they feel is a fair price after perusing the collection. If you accept, you will be paid. If you do not, you will likely be asked to pay for postage.
When creating your website, pay special attention to meta tags and meta descriptions. A meta tag lists words that people will use to search for postcards. A meta description is what appears when the search results are listed.
