Last year, I got a business card of SW and get 12万迈，用$15000，

Total 135k miles. Which gave me a companion pass for this year. SW companion pass allow use mileage too. The few trips my husband and I this year using southwest only cost us $5.6 per person per trip. So the reward is more than 12万miles for using $15000 in 9 months 

"Earning 135,000 qualifying points in a calendar year can qualify you for the Southwest Companion Pass, which allows you to bring a companion with you on Southwest flights for free. "