Secure-IT has a good proposition -- their security cabinet is lightweight (easy to move and ship), it's appropriately sized (deep enough for scoped MSR's), it has good organizers/rests/bins inside.
But then they ruin the proposition by pricing it way too high and having virtually no distribution network. Their price is so high, one could just as easily afford one of the cheap import gypsum-lined "safes" carried by the big retail stores. It's really not much less expensive than an entry-level Liberty. And since there's no retailers that carry them anywhere but online, there's no one really discounting them to free inventory space and no way to share shipping costs with a truckload of other stuff.
Now look at Stack-On security cabinets. They have all the same value proposition, but they come with a key lock instead of a electronic combo, and the organizers inside are mostly do-it-yourself (they come with a simple plastic rack for barrel rests.) But they're $140 and you can pick them up at the local Tractor Supply, Sportsmans Warehouse etc. You can have six of them for the price of one Secure-It. Since they're welded (just spot welded), they're probably a little sturdier. We already know that nothing under $1000 is going to be secure against quick-entry by power tools and certainly nothing will be fire-proof, so if we're shopping in this market it is just for a practical level of security to keep the contents away from those with only a casual interest and undetermined ability like kids or someone doing an unprepared smash-and-grab.
Not everyone needs a "safe." The contents of my security cabinet have a value much lower than what most Liberty safes cost, not to mention a proper Fort Knox. Those safes would not only cost me a lot, they'd be a royal pain to install, a further pain to move, and in an event such as theft or attempted theft, or fire, they would be damaged and actually increase my losses even if they totally saved the firearm collection. Financially, I'm better off having the guns burn rather than the safe -- or even more likely the guns and the safe.