50 cents per mile is very budget (in-and-out town days without hotels/hostels/campgrounds, hiker box “shopping” before grocery store shopping, minimal restaurant meals, no stove or stove fuel, hitching not shuttles/taxis, 1000+ miles on your sneakers, no batteries, one sleeing bag the whole way, lots of DIY gear repair, etc.).
$2 per mile is plush (lots of hotels, lots of restaurants, lots of beer, lots of stuff, lots of amenities, frequent gear replacement, summertime sleeping bag purchase, etc.).
There are many other things that you can do to minimize your on trail costs (mail drops with food/postcards/stamps/batteries/bugspray/DEET/soap/laundry detergent/Purell, travelers checks in mail drops, prepurchase replacement gear and sneakers). The only thing that might have trouble shipping is stove fuel. These changes wont eliminate the costs, or even reduce them, but it will make them more predictible from the get go.
The reason that I’m giving you confusing rates (that require multiplication products) rather than hard totals is because less than 10% of the people who are, “standing on the edge of the trail at either end ready to start hiking” actually complete the trail. More likely, less than 500 miles will be hiked. I hope this helps!
space monkey