Im just gonna see who wants to lend me some dough and get 10 litres....
Ten litres? Of 72mg/ml nic base? Ok, let's do some maths...
From one litre of 72mg/ml nic base you would get:-
3 litres (3,000ml) @ 24mg
4 litres (4,000ml) @ 18mg
6 litres (6,000ml) @ 12mg
12 litres (12,000ml!) @ 6mg
24 litres (24,000ml!!!) @ 3mg
Now, assuming you vaped 10ml/day @6mg it would take you over THREE YEARS to get through ONE litre of 72mg/ml nic base!
IIRC, nic base can be successfully frozen for 5+ years, but I'm not sure it'd last thirty. Lol
Two litres should see you right and (who knows) by then you might have graduated down to zero.
As for the dry herb burners and using tobacco in them - I have no experience of them so can't comment.