It really doesn't matter what prices you see listed or what anyone else is getting. You put your snake up for sale and you get one offer of $100. You either take it or you say no thank you and hold on to the snake.
I find it odd that people get upset about getting a low ball offer for anything. You should be upset about not getting a bunch of offers. Some people never even get an offer.
Think it through. Would you be happy with $125? $150? Does the extra $ mean that much to you. Don't tell me it's the principle. Remove the emotion and just make a decision.
Why do some houses sell immediately, sometimes with a bidding war and others sit around for months or years. Price? Nope. Emotion!