would you deliberately choose a bad deal? -need help

Hey so I have a real dilemma. I'm not asking for smart comments, I'm looking for opinions on the matter, what you guys thing, what you guys would do. I already know what is logically the best, that's obvious, but it's really conflicting.

I have something in my possession that is valuable. However I don't need or want any more of them. Someone has offered to buy them, but at a low price. I know they are worth at least twice as much. Since the items are not very useful to me, I should just liquidate them anyway so that I can get something useful, but since I know their value, I don't want to deliberately take a bad deal. It doesn't feel very satisfying, makes me feel a little bit cheated even if I were to verbally agree on their price. However if I don't sell then I can't get much out of them besides just have them. I feel like I would regret more if I sold them for a low price even though I got a more useful result in the end, it's so weird isn't it? I guess it's all relative value. I would like to keep them because I feel like I own something more valuable than they would offer. but just for me, personally, I would actually be richer if I took their offer because I can't do anything with my valuable possessions. maybe I'm just greedy, like this is a personality test, I'd be one of those people who'd hoard gold bars living in a shack eating meagerly instead of turning over my riches for a better standard of living...

I'm not saying be greedy, but don't allow yourself to be low-balled business wise when you don't have to be.

I think you can actually look around and perhaps put it on sale online? And see if there are people who are willing to buy at a higher price that you offer? 

Rather than you regretting to sell it at a lower cost?

Maybe you can put it up on ebay? Depending on which country you are from.

Hi! I'm a total noob here and I don't know why I am so hyped in getting badges here. Lol can someone tell me what badges we can collect and how to collect it... I'm a total pokemon nerd so.... I gotta catch 'em all (the badges). 

I pretty much agree with writersale and roxxi. Just because you don't want it doesn't mean you should let someone, knowingly or otherwise, cheat you out of what's yours. Regret is a hard thing to live with, considering we can't currently go back in time.