Travelling salesman

I took the opportunity to sell bars of soap. On our last supply flight, we brought in 288 bars of soap. We buy them at 79 toya and we sell them at 50 toya. Add the transport costs and we end up paying about 8p per missionary couple for every bar of soap we sell.
It was our idea for a low key community project that we could start on immediately to help out in the Coronavirus crisis. We had no idea how it would go – our bright ideas might have gone down like a lead balloon, but it took less than a week to sell out of soap!
We’re happy to ‘shorten the road’ for these guys to get them access to soap. It’s our first ongoing community project and we’re going to not do anything else for a good number of months so we can measure how effective it is, what issues come up and generally observe the medium-term impact to the community and our relationship with them.
We’ve only just started and we’re already concerned we’ve embarked on an unsustainable venture… what happens when there are no missionaries to subsidize and transport the soap anymore? Should we raise the price so we make a profit so that later on it could potentially be managed by someone else?