Over a period of several years, I have sold a number of books through Amazon Marketplace. Like you, I was nervous about it, but I found that the instructions on Amazon’s site were very thorough and clear and I had no trouble following them.
My main motivation at first was just to move books out of my house. I didn’t care about profit. I just find it very hard to let books go, so it helps if they go to someone who wants them.
However, I did track my sales and my costs, and I found that I often barely broke even and sometimes lost money, meaning that shipping cost me more than what I got paid for the book, even without counting the time and the gas to go to the post office. Bear in mind that Amazon takes a very big bite out of your selling price, so if you don’t charge very much, a portion of the $3.99 shipping allowance may be all you net out of it.
Here are a few examples of my sales during the past year:
My price: 14.00. Amazon fee: 4.44. I made: 7.32.
My price: 9.98. Amazon fee: 3.84. I made: 7.16.
My price: 7.99. Amazon fee: 3.54. I made: 5.93.
My price: 14.50. Amazon fee: 4.52. I made: 11.00.
My price: 15.50. Amazon fee: 4.67. I made: 12.31.
My price: 9.75. Amazon fee: 3.80. I made: 6.01.
My price: 4.39. Amazon fee: 3.00. I made: 2.45.
Note that these columns don’t balance; I haven’t included shipping cost or allowance here, nor what I spent on packaging—which may not be negligible if you have to buy shipping envelopes. I’m just showing you how much Amazon took out and what I netted. And these were my big sales, mostly textbooks, after I learned some lessons such as @glacial points out.
I’d sold 21 books before I cleared as much as $100 (running total from day 1); I never made as much as $30 on anything. For my lower-priced items, before I learned not to try to compete with the pros, Amazon routinely took a cut much higher than my selling price (for example: my price, $1.99; Amazon’s fee, $2.64), so I was lucky if I made more than a dollar from the shipping allowance alone.
Other things I learned:
• Don’t offer express shipping. I’m sure to lose money on it.
• Don’t sell any heavy books unless I can charge a lot for them. Shipping will eat up all the profits.
• Do wrap them nicely and with care. Customers notice and reflect that in their ratings and comments.
• Do describe them honestly and use Amazon’s definitions of descriptors.
• Do sell textbooks as soon as possible after using them because they date quickly.
• Do anticipate semester beginnings by about a month.
• Do read newly published books very quickly (and gently—but I always do that) and turn them around fast. When I’ve bought a book that was just out, read it fast, and listed it right away, I’ve been able to sell it (looking untouched, but still listed as used) within a day for nearly as much as I paid for it. Minus, of course, Amazon’s cut.
For the time being, I’ve put my seller account on hiatus while I decide whether I want to continue. I’ve found some other outlets for my used books and don’t have any more textbooks at present, so I’m not sure it’s still worth the bother. However, I do continue to be a good customer for others’ used books when I can’t find them at the library.