I have been looking at safe units at Walmart ... are those good enough, or are those "cheap" solutions? I see some are 1/2 hour or 1 hour fire resistant, some are also water proof (some are both). Is there one in particular everyone in the hobby uses? Do you recommend the one with a key lock or numeric combination lock?
Check out the gun safes. There are some heavy duty ones for about 300-400 on sale. They hold 16 guns plus ammo or about 2 million cards. if you are Canadian there is one on sale in the flyer starting saturday at canadian tire.
I bought a gun safe years ago and had it put into a closet near the front of our house. It came with adjustable shelves and I store my graded cards in card storage boxes. Unfortunately, the large boxes hold about 180 cards and are a bit cumbersome to move in and out of the safe when you want to add another card or take something out.
I paid a lot for my safe 10 years ago, but the prices have come down a bit since then.
I agree that a large gun/hunting store will be the best place to check out different safes.