He renewed his call for a global ceasefire so that countries can focus on fighting the novel coronavirus and appealed for fresh efforts to Silence the Guns in Africa by the end of 2020.
Crucially, this is only the case if everything else stays equal: so if the quality of the product stays the same and if the income of the buyers doesn't decrease.
Then with a lower prize, more items will be purchased - and less if the prize increases.
