So we ended up driving as far as Racine to make sure that I hadn't missed the place. Since I'd planned to buy gas in Wisconsin, I was just about empty by that point. When I found the gas there was $1.759, a good six cents a gallon more than at home, I bought ten dollars worth to make sure I didn't run out. Gas in Kenosha was $1.619, which was much better.
At the Casual Male store, I managed to get out for under $100 with three new shirts, a belt, and a new midweight jacket. Then we headed back to Gurnee Mills to do some more Christmas shopping, which left Katie thoroughly exhausted before we were done. But I found a number of things for Gretchen, the girls, and our friends, so it was a good run.
Sadly, gas at the Shell station outside Gurnee Mills was $1.579. Wisconsin is slipping. :)