Life size gremlin statue?

hi im thinking of selling my life size gremlin and was wondering if anyone could help me figue out how much he's worth it was given to me about 10 years ago its 2 and a half foot tall by 3ft wide across his ears ive decided to try to sell it as im afraid its going to get broken by the kids :-( its been the subject of many conversations with people its even scared the cat LOL ive had him leaning against my fireplace but he could do with a stand to hold him up im not sure which character he is i think he's made out of fibregl