Those do match the SkyBonus coupons. 149 transactions for 6 coupons each is just short of 900 coupons. They run 10k SkyBonus points for 10 coupons, so the guy could have redeemed 900k SkyBonus points. It's not inconceivable that he/his company earned that many... with earning rates up to 30 points/$1 for premium fares, 900k points could be earned with $30k of premium travel.