hey so. while the amount of work and time you put into a drawing should be reflected in your price, selling something is also about the value someone else assigns to your art, aka what THEY would pay. you asked for an opinion and if you are gonna go off when someone suggests a price lower than what you like please stop making these threads. they werent even rude about it. you asked for a price, they gave a price. nothing more and nothing less.
i for one agree with taesaek. from what i have seen you definitely have improved from the past and you should keep going, but your art is not at a level I personally would buy.