Sell the Valiance?

I have an Argent Peacemaker which I pretty much use all the time as my gun. So I was wondering, should I sell my Valiance? And if so, for how much? (Neither gun has any UVs.) Furthermore, I don't have 4k CE for the unbinding cost, so whoever buys this will have to pay up front and then I'll use 4k CE to unbind the Valiance. This is obviously not an attractive prospect for any potential buyers, so how can I assure them it's not a scam?
Edit: Also, this is kinda random, but is the player Krogmo really nick? I heard that once but it could be totally made up.

You're sure it wouldn't be worth 4k CE? I know it's not the most popular gun ever, but it is 5 star. Also, I can never really fit the Valiance in (or remember to). I guess it would be useful in Royal jelly runs, though, compared to the Argent Peacemaker. Guess it's all irrelevant anyway if there's no way to prove I'm honest about selling it...
You won't be able to sell the Valiance to another player at profit.
Consider: It costs 1450 energy to make a valiance, and 40k for the recipes. The recipes can be bought in Haven. Nobody has to look for them. You'd have to try and sell it at over 6k CE to make profit, and over 4k CE just to cover the unbind cost, and even in today's economy it would only take about 2.5k CE's worth of crowns to make it in the first place.
Then there's the other issue: Valiance is not a popular gun. Most players aren't even going to try to get one, and they certainly won't be looking to buy it off another player.
As for issues of unbinding items to sell them, it's unfortunately a problem with the system - if you unbind the item on your own CE, you risk not being able to sell it and wasting 4k CE. If you provide the CE for someone else to unbind the item, you risk them just disappearing with your CE. There's so much risk involved I'll never touch it - OOO need to make unbinding part of the trade process itself; as it stands people can absolutely waste thousands of CE without any reward whatsoever.
Keep the Valiance. The Argent Peacemaker is good against undead and fiends (except devilites which dodge), but weak against everything else. You'll want a gun that's decent against slimes and constructs, at least, so you can take out polyps and gun puppies from a safe distance. The AP fails miserably against both.
Also, without a UV, your Valiance isn't worth the 4K unbind cost (and only an idiot would pay that upfront because of the scam risk; there is no way you can prove yourself honest, unfortunately). The recipes for valiance are easy to come by so anyone can make his own quickly. Other guns require a recipe from tier 3, but the valiance recipe can be found in Haven.