Customer 9 (annoying)

Guy comes in at least once every 2 weeks and he buys something which is great then comes back within 2 weeks to return it and buy something else which is ok if you do it once or twice but he has done this so much he has bought and returned almost $3000 in items. And that is not cool that is using the system. Its people like that that cause prices to go up and make it harder to buy things. Not to mention its a waste of our time to. Hes a nice guy and always joking around with everyone but its just wrong to buy things knowing your going to return it next week. Not to mention the time waste hurts our commission and annoys our managers. And what makes it weirder he even asks and gets discounts on these items from some of us hoping he will keep it but he just keeps returning for a full refund. I don't know, i don't have anything else to say on this guy so its short today but let me know what you think. Is it ok to buy something knowing your going to return it next week? Do you think he will ever keep any of the things he buys? Should we waste our time discounting items hoping he will keep them? Comment below.