If you are on the Pay & Go plan, each keyword costs $25 per month in the US and $30 per month in Canada. Each auto-reply sent back to the user costs the same as sending a regular message on your plan. Triple Threat Texting offers bulk rates for keywords if you are renting 20 keywords or more. Please contact our billing department for a quote. We also have a number of monthly plans you can choose from that include one or more keywords for free.