Anyone use these storage boxes?

Cheapest ones I can find on eBay for storing graded cards. I have a couple of the cases that Matt sells but really have no need to protect about 150 different 1983 Donruss PSA 10 commons.
Are they sturdy enough to stack without busting?
BCW Supervault
Are they sturdy enough to stack without busting?
BCW Supervault
0
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<< <i>Only concern is that I would need 9 boxes if I ever finish off the 83 D set. Then would need about 10 more for the rest of the registry sets I'm working on. >>
What are your other options?
<< <i>I stack mine on their sides. They are more stable that way. >>
I was just about to respond saying that these boxes are great but I wouldn't recommend stacking more than 2 high. Sideways is a great idea!
<< <i>Other options are listening to my wife continually whining about graded cards in a dozen different places of our closet and bedroom. At least they would all be stored in purty boxes in one spot. >>
Well then I'd say $18.49 is a small price to pay.
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1973 Topps PSA 8+ (99.81%)
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1977 Topps PSA 9+ (100%)
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1938 Goudey (56.25%)
1951 Topps Redbacks PSA 8 (100%)
1952 Bowman PSA 7+ (63.10%)
1953 Topps PSA 5+ (91.24%)
1973 Topps PSA 8+ (70.76%)
1985 Fleer PSA 10 (54.85%)
I have them stacked 5 high x 4 wide with no isssues. They are pettty tough.
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