Greetings my friend,
You’ve explained the concepts of cost and expenses very well. The distinction you made between cost and expenses is really clear. The money spent on buying the biscuits is indeed a cost, while paying someone to help offload them is an expense. It’s the same with your flight and the shoes; costs are related to acquiring what you need for your business, while expenses are for additional services or items that support your operations. Understanding this difference can really help in managing your finances effectively. Good luck.