So, we went shopping. I suggested we try Ross (no luck) and Plato's Closet, which specializes in buying and selling gently-used name-brand clothing, mostly for teens. We hit the jackpot at Plato's, finding 2 pairs of shorts and a shirt for $30.
These shorts look to be brand new (still had tags), and were only $10.
These shorts are from Foot Locker (so the tag says) and were only $8.
This dress shirt was only $12.00. I figure we would have spent at least twice what we did, if not three times, if we had tried to buy the same brands and/or quality at a regular retail store. He was thrilled with his finds and declared that Plato's Closet is now his third favorite store. That's high praise from someone whose #1 store is GameStop (where he buys and sells used games--I've obviously taught him right) and Games Workshop.