Worked with someone years ago who had pros clear out their home while away on vacation. But agree its probably rare and random.I'll add in here a caveat too. My goal is to provide peace of mind when not home and provide secure storage for weapons/optics. From my reading, most Rifle Safe models can be broken into by anyone with experience. But If someone ever broke into my home while gone, they're probably not bringing tools. Just trying to grab & go. So secure within reason if that makes any sense. Then fire ratings... idk, something would be nice but to my understanding you may be asking alot of a safe to protect firearms in a house fire too.
In your price range Id guess it would take some good tools and knowledge to gain entry, Id like to think anyways. Ive heard all it takes is a die grinder.
I don't know much about ratings, Ive heard to get one thats certified "residential security container" but that there are no other real security ratings, so I've also heard to buy the most expensive you can afford. I agree to get some kind of fire rating but those wont save anything from a total house fire.
I'm a fan of two smaller safes, easier to move around and you can place them in separate locations... if someone takes the time on one, they wont on the other saving half your collection.