Originally Posted by DanaMac
But most of us buy in advance to keep stocked up, so you shouldn't be buying daily and worrying about the daily price. Plus when we buy, we get our invoice right then and there and can see the price. But with my markups, a few percentages won't hurt if we miss a price change.
Pricing by FIFO or LIFO can change your margin significantly if the commodities price fluctuates drastically.