Ericire12,
I must agree with the other guys here on this post. I have always thought a safe is a great choice and provides better protection from theft especially if you place it in an area where you can bolt it to the floor or studs in the wall. Having said that, something is better than nothing and if a $100 cabinet is all you can afford buy it and bolt it down! I have been shopping economical safes lately as I am in need of another so hopefully some of my efforts may help you as well. I found that a decent Cabinet is almost as much as a less expensive safe! A large cabinet is usually about $250 and a non-fire proof safe can be $250-$350. Stay away from Stack-On's low end product line though. These are typically sold at Dick's Sporting goods and places like that. I looked at one that was $369 and the steel was 2mm thick not the more common 5mm and the bolts were screwed into the side of the door instead bolted in and it was actually flimsy. While this is sitting on the floor for $369 Home Depot has a 14 gun, heavy duty 5mm steel safe from Sentry for $399! This of course is a no brainer. Check your local Sam's Club, Costco, or BJ's wholesale clubs also. They sometimes have deals on safes that are pretty good. The local Costco here had an electronic safe with a humidifier included and an internal lock box for just $389. Start with how many guns you need to store, double the number and find a safe that meets those needs. Decide if you want/need a fire safe or not. Fire safes are great especially if you have something handed down to you by a relative or you are a collector and the guns you have cannot be replaced. A fire safe means two things though, a higher purchase price and more weight so no storing it upstairs! However, you will never regret investing in a safe. You definitely don't want to ever think someone was hurt with a gun you failed to properly secure. Having said all of that buy as much security as you can afford as that is the best you can do. Hope some of this helped!
(By the way, I love the Han Solo quote!)
Wheelgun