To get clear, the options are:
Option A): "Optima LSH 0w30 Fully Synthetic Low Saps Engine Oil Honda ACEA C2, API SN/CF"
https://www.lubetechshop.co.uk/product/optima-lsh-0w30-fully-synthetic-low-saps-engine-oil-honda-acea-c2-api-sn-cf/
20L = £111.95
5L = £33.45
OR
Option B): "Optima C3 LS...