Breakdown of ingredient expenses, single batch syrup:
2kg sugar £2.40 (based on essential fairtrade organic cuban)
       or £1.60 (based on silver spoon)
2L water 23p
30ml caramel colour £0
4tsp citric acid 20p
.75 tsp caffeine 7p GBP
10 ml flavour oils mix 25p.

breakdown of oils per 7x mix (makes approx 3 batches cola syrup):
	3.75 ml orange oil $0.02;
        1.00 ml lemon oil $0.02;
        0.75 ml nutmeg oil $0.02;
        1.00 ml cassia oil $0.20;
  	0.25 ml coriander oil $0.40;
  	3.00 ml lime oil $0.52;
  	0.25 ml lavender oil $0.10;
                                                                                                                                    
	oils total= $1.28 / 73p


	10 g gum arabic 0.00; 
	20 ml water (negligble).


total= £3.15 per 3L ? syrup,
the overwhelming majority of which is spent on sugar.

this means each 2L cube cola costs around 75p to produce. 43p (water) and 32p (syrup)
[comparative prices: virgin cola 68p per 1.5L, thrift cola (LIDL) 39p per 2L]