The biggest problem with "starter" safes is that because of the low,generally sub $600 price,they do not use a U.L. rated lock and the bolt work is pretty much unsupported so they are quite easy to get into.
Point in case.
My first safe I ever bought cost me around $470.
It was an Amsec Highland 55x17.
The safe then (2003) was made out of 10 gauge steel and had a door made from 1/4 plate steel the it weighed close to 300 pounds.
Sounds good, right?
Problem is the lock is one of those non U.L rated three wheel combo locks so it has no relocker or for that matter lock protection.
A person does not even have to pry a safe like this because all you have to do is smash the combo lock and insert a screw driver or some other like tool and just open the safe.
Rather than spend $4-600 dollars on some 14 gauge easy to open safe you would be better served buying a 48" long or slightly larger 16 gauge contrators jobbox made by Ridgid,Greenlee,Knaak,etc.
It will probably be more secure too.