Cost
Definition 1 of 4
Pro Tip 1/3
Fixed Price
When discussing cost as a verb, the price given is usually non-negotiable, as in a store price tag. How much does this book cost?
Pro Tip 2/3
Hypothetical Transactions
Use 'cost' to discuss the price of hypothetical or future purchases or actions. Renting a larger apartment would cost more.
Pro Tip 3/3
Past Purchases
For things already bought, use 'cost' to indicate the money spent in the past. The wedding cost us a small fortune.