How much is my shed.....worth?

Im selling a 10 x 10 wooden shed. I have it posted for $100.00 (one hundred)....it is nearly brand new....i think i posted it too low...if so is it ok to post for more..and if so how much? Im not trying to get rich trying to help out really......retails for over 1500 at home improvement stores...if it is too caddy to change price fine but if it is too cheap i don't want to be naieve...I don't know much about these things..it is equipped with electrical and has a great roof no water damage...thanks...hurry need to know asap it is probably 4 years old....has shingle type siding on it treated and painted and one shelf near back....they have to move it? Thanks again