£6.41 per unit
£7.01 per unit
£13.52 per unit
£14.80 per unit
£10.46 per unit
£8.93 per unit
£12.62 per unit
£8.07 per unit
£11.48 per unit
£14.18 per unit
£9.93 per unit
£15.02 per unit
£10.51 per unit
£13.84 per unit
£9.69 per unit
£5.27 per unit