I noticed a G1 Grimlock on ebay but one of the tabs are broken. I am would like to know how to appraise g1 toys. How does a broken tab or any other broken/missing pieces effect its value? Is there some sort of guide listed somewhere, Ive searched the threads here but maybe Im not using the right key words. Does a broken tab for an original g1 tf drastically reduce value, even if the entire figure is inexcellent condition?