For the $$, you'd be better off getting a Stack On security cabinet.
That $300 is the price you'd pay for a 'real' entry level fireproof safe at HD or Lowes (when on sale, Thanksgiving or other holiday.) I'd wait for something like that if you're looking for decent quality. The lock in particular probably isn't great on the HF model.
I'm an avid HF shopper and their stuff is hit and miss.
Things that are good:
- Monkey wrenches
- Work gloves
- Allen wrenches
- Sand blasting tools, other air tools
- The LED flashlights
- USB solar panels (compare to Failzero, except only 25% of the cost)
- Garden tools
- Camping gear (compare flint fire starter @ $2 to REI @ $15, same exact thing)
Things that are junk:
- grinding wheels/discs/tips
- drill presses