Xiaomi gifts all 184K Mi 1 first-time buyers a ¥1999 (~$308) voucher
I had a flying instructor that had an early serial Bose X-20 headset, the predecessor to the Bose A-20 which has sort-of become the dominant high end aviation costing $1000+. He sent the X-20 in for repairs one day, and a brand new A-20 came back with a thank you note for being an early customer.