For a while, I was actively buying coin lots on eBay to flip and earn money to purchase new coins for my collection. I can be hard to find a deal good enough to make money on eBay because of all the fees associated with doing so. Both eBay and Paypal will take their cut from your sale. About a year ago, I purchased a couple of silver Roosevelt Dime sets in Dansco Albums (1946 - 1964). These coins had very attractive toning and the price was right. I sold many of the common coins for around $20 each. These generally bring $3-$5 untoned. This price provided me to make a profit selling these and the proceeds went to my commemorative silver dollar set.