These containers certainly look great and sturdy, and the faucet seems practical, indeed !
Their shape also is somewhat better for storage than the 8-liters bottles I had in mind. I agree they can help saving some storage space, especially if you can stack them up.

But I haven't seen such containers here ... Will have to look for some equivalent...

OTOH, handling a 8-liter bottle is easier than a 26+ liters container....