Question: how much is a 5 lb bag of potatoes?
Answer: The data weren't collected for 10-pound bags, but the average for 5-pound bags of Russet potatoes was $2.55, according to the USDA's Agricultural Marketing Service. So extrapolating those figures, it's safe to guess that a 10-pound bag of taters probably cost closer to $5 — not $15 — back in 2008. Whoops.