Let me start by saying $100, for a 4.5cu safe is an absurdly low price. Any quality name brand safe is easily going to cost 5 or 10 times this price.
So keeping in mind that the price is very inexpensive, you might not be surprised to learn that the manufacturer has cut a lot of corners on this product. A lot of it feels cheap and not built to last.
The included keys look, feel and sound like they're a child's toy. But they do work.
The plastic ring that you twist to open the door has a lot of slop in it, and feels like if you put too much force into it, it would break.
The keypad entry, works but is mostly a gimmick and runs on AA batteries that are not included. The instruction manual warns not to use rechargeable batteries. The keypad does have an audible alarm.
The provided feet are not metal like the safe itself, they are extremely flimsy plastic with a silver paint job. I opted not to use them as they look like they'll break immediately.
It also does not ship with the "Emergency battery box" as stated in the listing, and the manual states this is not included, which contradicts the listing and photos.
The outer metal shell is rather thin despite the way they made the doors look thicker and stronger. Despite the advertisement saying "Anti-Drilling", you could easily and quickly drill through the walls of the safe, or cut through them with an angle grinder in no time.
It's also not water-proof for flame resistant in any way.
Don't expect high security with this safe. It's more about preventing casual snoops or children from grabbing your things, anyone more determined to commit theft will find a way.
All of that criticism aside, for $100, this is actually not a terrible deal. It's metal, it locks, it's big enough for lots of different objects, papers, money, keys, coins. It has felt lining on the inside. The drawer keys are cut differently so if someone gets one set of keys they still won't be able to immediately open both drawers. It comes with wall mounting hardware if you're inclined to affixing it to a wall. The top drawer has key hooks on the inside of the door, in case you want to store keys easily.
If you're on a budget, want a decent sized safe, and don't need extremely high safety, it's a perfectly serviceable option.