As an owner of 4 gun safes, one high end, (Liberty). One middle of the road, (Cannon). And 2 low end, (Stack-On), I can happily report on an excellent, low cost alternative to what I personally feel are overpriced gun safes. When you get down to basics gun safes are going to protect your collection from kids. Insurance statistics show that 90% of residential burglaries are by kids under the age of 16, and most are in the home for less than 2 minutes. Most any suitable "safe" will protect you from that. Fire protection is relatively worthless because again, insurance stats show water damages far more homes than fire. No gun safe I've ever heard of is waterproof. In that regard every safe in New Orleans was totally worthless to it's owners.
I just purchased one of these "On-Site" tool boxes from Greenlee.
These are very strong and have recessed wells for 2 padlocks that cannot be reached once locked. Mine is 72" long and 24" square. I have it in my living room, and once it's covered with a nice couch throw, or bedspread you don't even notice it, or can tell what it is. Another plus is it allows for horizontal storage of weapons which prevents oil from running down the bore into the stock at the tang area. They are very spacious inside and I lined the bottom of mine with 28, 25 pound bags of lead shot, (700 pounds) so it cannot be moved. This coupled with the weight of the box itself along with the firearms makes it all but impossible to move. If you are handy and can work with wood, you can make some very nice felt lined wooden racks for your guns which allows you to store them without cases. These boxes can be purchased from Home Depot or Lowe's very reasonably compared to traditional gun safes, and work every bit as well, and will give as much or more cubic feet of storage. I'm very happy with mine.
This is it uncovered with both locks in place. I purchased 2 Master Lock Padlocks with Boron Carbide Shackles. I plan to do more with it in time. I just got it in place this past holiday weekend. I might panel it in with some nice wood which would even further disguise it. Bill T.