The main problem with comparing prices of all the different manufacturers, is that the boxes come in all
sorts of sizes and all sorts of dilution rates
Some are 12ltrs, some are 7ltrs and most are 10ltrs.
The best way of working it out is to understand how many drinks you can get out of a box.
a 10ltr box of Cola at 6:1 dilution will give you 70ltrs of drink or 246 half pints
a 7ltr box of Cola at 5.4:1 dilution will give you 44.8ltrs of drink or156 half pints