I need a medium sized safe to keep some saved up money and valuables. Where can I get a good quality one and about how much do they run for?
Just remember that you generally get what you pay for. The small 'fire safes' that are sold at wallyworld are great for keeping things safe in a fire, but can be opened by someone with a hammer, chisel and a bit of time.
Gun safes are a good type to consider, as they are usually at least made of steel, instead of a metal sheet over cement like the fire safes. These can also be bolted to the floor which makes them harder to grab and take off with. Smaller sizes with good thick steel aren't too bad in the cost department.
With stores going out of business, you can pick up used store safes pretty cheap right now. I got one a short time ago that is about 2 1/2x2 1/2 x2 1/2 with very solid steel walls and 2 lockable compartments. The doors are very solid with good combo locks. It was designed to drop cash through a small slot in one of them. Even this small it weighs over 200 lbs, so it will give a certain amount of resistance to being carted off. I plan on bolting it to the floor and building a concrete block structure around it that I was going to build anyway. The safe is just an added feature.

I paid, as I recall, about $150 for it.
When I had my shop during the 'survivalist' years almost 30 years ago, we sold some that you dug into the floor. The walls were thick plastic and the top was a steel ring with a thick steel combo type door. The idea was that you would encase it in concrete in the floor to provide security for the walls, and the top would take care of itself. We used one as our floor safe in the store. They cost lots less than a similar steel walled variety.
Hope this gives you some ideas. A friend of mine was getting so many used safes offered to him he considered opening a small store to sell them. Only a sudden unexpected divorce changed his plans.
G