Even though this is an older thread people often see that bigger number 25K and think that is profit. You have to consider the OP is profiting way less than that. For instance if he sells 100 phones at $250 = $25,000. Chances are he has at least $150 in the phone. So 150 x 100 = $15,000 invested. Now you have to take in consideration the ebay and paypal fees. At minimum you will need to include 10% for these fees. This percentage is on the gross amount of 25K so fees = $2,500. $25,000 gross - $15,000 investment - $2,500 fees = $7,500. This is probably more what the profit looks like if he is giving free shipping then it is lower. I would assume that most phones will not have the $100 profit unless they were "lost or stolen." I do not think a person would give up this information unless the sources are Craigslist where the OP would not be concerned as chances are you are not in his area and would not compete with him. If it were me, the only way I would share this info is if I had moved on to bigger and better things and thought I could make more selling then guides than the phones.