Even if they don’t the cost for excess baggage is almost always cheaper than UPS. And if you check a box with styrofoam, unless you’re flying very, very far the reality is that the cargo isn’t in the air long enough to change the temperature all that much. Like SFO-JFK isn’t enough hours to change by more than a few degrees if it’s in styro. Which it should be since that’s the cheapest/easiest way to ship non-breakable.

Moving wine around costs money. So does storing it. You can’t get too riled up about it – that’s just the way things are.

Really, it’s hit or miss with both checked luggage and UPS. Packages are tossed and jostled, often lost, and subject to extreme temperatures (what’s the temperature differential in a cargo hold between heat reflected from the tarmac, and air temps at 30,000 feet?) And both will cost close to the same.