Did you get your keys?
I bought mine on ebay
http://www.ebay.com/itm/360773654120?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_152wt_1362
The price for just the keys was almost the same price as a key set with cam lock so now I have a spare cam just in case one breaks
when I got my keys I opened mine up to find about $20 worth of coin all over the bottom of the unit as well as a key that works on all the doors hahahahah I have no idea how it was locked in there guess the owner locked the spare in the unit
and yes the coin drop doors run on there own set of keys and I have no idea about them I had one lock on one so I just drilled that one out
hope this helps