I think I’ll start narrowing the field. One of the true hikes is - - - - - #10: Spent over $15,000 on the trail.
I read about this hiker who did a NOBO back in the 95-98 period. He was mentioned in one of the “narrative” books on AT hiking that was published later. I also met a Ridgerunner who said he thinks he had met the guy. He did a fully supported thru-hike. Carried little if any gear and had a van and family/friends who cooked meals and provided a place to sleep. But - he still hiked the entire trail. When the van was accessible at the end of a given day’s hike, he would head to the van, have a hot meal cooked on a stove, have a cool (or hot, as relevant) drink and crash for the night on a matress bed.
If what I was told is true, part of the $15,000 cost involved some major repairs to the van during the hike. That would explain a good chunk of the cost. If that was anywhere near half of the $15k, the rest could very easily be spent on town, food resupply, parties, support personnel, etc.
JAWS