Will this finally convince you to quit? How rolling your own cigarettes costs the same as a trolley full of groceries Looking at a trolley filled to the brim with groceries next to a packet of roll-your-own tobacco, you wouldn’t imagine they would cost the same. But a startling post by Reddit user HeinigerNZ titled ‘What $90 buys you in 2017’ proves that these two very different purchases have one very significant quality in common.