Based on my Visa charges, and some assumptions here's my expense list for the trip:
Diesel & DEF: $434.65 (I think I came back with more fuel than I left with; I topped off DEF twice since it was available at the some of the truckstop pumps)
Food and snacks: $126.87 (plus I ate some chips and a couple of sandwiches I brought from home so add $10; Does not include the cost of Sam's pork)
Gas: $74.85 (well, I sold Wes 5Gs for $15, and I still have 11Gs left, so really it is probably less than half of that)
Park Fees: $120.00
Hotel: $229.00 (well, I got $21 out of Justin and $100 out of Wes)
Booze: $17.38 (seems cheap, because I brought a bit of beer and liquor from home, so probably add another $100)
Est Total: $943.75 (with the exceptions accounted for)