Hoping someone can shed some light on the popularity and collectable value of a 1930 gas station cash register. Of course the keys are labeled gas oil tires lube and so on. It is in working condition and I have the opertunity of buying it for $400. Are these hot items? Its a little out of my direction from restoring pumps, oil dispensers and collecting cans and containers, but Im toying around with the fact it would look great displayed. Once again, are these sought after? thanks, Roger