Lol, I've thought this same thing many times myself...and I think about it when I put things up in my shop.
I often write things like "really attached but you can send offers" or "Not really for trade but show me what you've got" just because 1. It reduces the amount of offers you get and 2. the offers you do get are ones that reach your level of expectation.
But, at the same time, I've been accused of trying to cheat people by valuing my cards too high. Like Lmnseason said, there are 400k registered users in this game. I have one of the many Alister's floating around. She's one of my favorite cards, and to me I want no less than 150te for her. IDC what everyone else is selling her for. If you like their prices so much, trade with them.
I do not feel bad for asking for more than the next guy. I'm nt the only seller, and I'm not forcing my cards onto you, so take the trade or walk away, don't call me a cheater.
_________________Wanna Know What I Do In My Free Time? Click here