Good advice above from
Peter Hartwig and the others. Allow me to add a copy of a post I made in another thread with essentially the same question:
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The thing about selling here on BF is getting enough eyes on your prize. That means that you need to be patient and prepared to relist - maybe 2, 3 or 4 times even. Some of the individual sale threads get bumped off PAGE 1 so fast that your eyes pop out. That speaks to an active exchange. I have relisted knives 3 or 4 times and eventually my offers have sold - sometimes for MORE than my original asking price. It's all about getting the right pair of eyes.
Good photos, accurate descriptions and a fair price are essential. Tell us what you want for $$s up front. Folks sell stuff for NET all the time but I suspect they lose more sales and/or get more aggravation than those who say up front what the total delivered/PP fees costs will be. PayPal Goods & Services is the only way to go as it protects all the parties in the transaction (mostly).
Good photos are worth the time. Don't send us to another web site. Learn to post at least a few good images in your post. DON'T do such huge close ups that your 3" knife looks like a 6" knife but DO post detail photos big enough that we can see the details. The more up front info/qualifiers that you provide the easier your sell will go and the greater the satisfaction of all involved. My 2¢ but I've bought and sold quite a bit here on the BF exchange with much better results than on the bay. Your experience may differ but to be fair, it took me at least a dozen sales before I figured out a good system.
Being totally new to selling on BF, with no feedback, you will potentially have difficulty generating trust that your knife is all you say it is and that you are an honest broker. With good photos and accurate descriptions of all the good and all the flaws, and using time honored reputable selling practices that make BF exchange deals go smoothly, you will succeed.
And - by the way - the secondary market is fickle at best. If you think that you will get all your money back on every sale - forget about it. Likely you will take at least a 15 to 20% hit - even on LNIB knives after fees and S&H. Just the way it is. Your milage may vary.
Good luck.
Ray