Thank you for alerting us, Sajha keto. This is a great info.
Let me add something here. This kind of fraud happens on every e-commerce platform, be it eBay, Craigslist, Amazon etc. The so-called buyer contacts you in a fishy way and convinces that he/she is in need of whatever you have to sell. Then they ask for the address where the check is to be mailed. They send a check for the amount higher than what you have asked for. You deposit the check, it clears in the beginning. Then the fraudster immediately calls you to send back the extra money and they say the overpayment was sent in error. Here is where you are cheated. You will send the payment for the extra money you received but after a while, you will get a notification from the bank that the check you deposited from the fraudster is not genuine and your account is debited.
Nepali daju bhai, please beware!