I've got a couple of boxes currently, an M70 in reasonable condition and a GF777 in not so great condition, both are good for taking out to bbqs etc... but im looking for something in really good condition to keep inside - im interested in picking up an M90 or a GF777, or even another M70. My knowledge only really extends as far as what I see ebay items going for, can anyone give me an idea of how much I should be spending on these boxes? And are all those GF777s I keep seeing coming out of china legit? Thanks