... and then when all the status is resolved I recommend:
you take some decent photos - read this thread for excellent advice -
http://www.bladeforums.com/forums/showthread.php/1467217-Tip-for-those-selling-knives-use-these-4-pictures! Ideally use a photo web site like PHOTOBUCKET or IMGUR but you can just use the thumbnails that posting through BF "insert image" accomplishes.
Provide as much accurate info about the knife as you can. THE SPECS: Blade Steel , handle material, overall dimensions, cutting edge length etc. THE CONDITION - new or used, how much used? The photos should have shown deficiencies but a description is valuable and represents good faith on the sellers part. Any paper work or original box included should be detailed too.
Go to the exchange and look at some sale threads to get an idea of what is needed and what posts seem the most appealing to you. Go ahead and copy their format.
Clear instructions for how you want to be paid - Ideally - USE PAY PAL. This service charges a small fee (2.9% + 30¢ per transaction) but it will provide BOTH you and the buyer protection /recourse if the deal goes bad for some reason. Yes, stuff happens - though not to everyone all the time. It's just good to take precautions. Cheap insurance.
DITTO how you will ship the knife. In the US? Ideally ship using USPS small flat rate box priority mail and expect to add insurance to full value if the knife is valuable. Are you willing to ship to Canada or overseas? Who will pay for that extra cost. Make your terms clear.
THE REAL PRICE - should include the S&H and any fees but
some folks prefer to sell NET and then get into arguments with their buyers as to how much money they REALLY need to send. Just include one firm price that satisfies you and covers your expenses. Understand that you might need to lower the price after a you have 300 or more views without a taker. BUT some folks are very patient and simply realist 3 or 4 times, standing firm on their fair price and eventually the knife sells. Others lower the price after the 1st hour and pretty much every hour after that. It's all about your comfort level.
OK - 'nuff said. There might be more. Someone else could chime in. Good luck with your first sale.
PS -
As it will be your FIRST sale and you have NO TRACK RECORD or sellers rating on BF you could find the process painfully slow. People will not jump in to take a chance buying from a complete unknown. Providing good photos and accurate descriptions and fair terms will go a long way to alleviate their concerns - of course offering a GREAT KNIFE will help. Be flexible otherwise and be patient. Relist in two weeks if need be. That's just the way it works.
Ray