At one point during the pizza party, Nate is holding beer in his right hand and rubbing Ray's shoulder with his left, but the camera returns to him a second later with these actions switched.
Hank Heywood claims that the Legends have spent $1.7 million on historical costumes. However, previous seasons have shown that the Waverider creates both historical clothes and equipment for the crew for free using Gideon's programming.
He also made a similar complaint about the Legends' food supply, which is actually provided by Gideon as well.
The only situations that seem likely is that he was somehow misinformed about the Legends' actions, or that Gideon creates them out of some unknown material, like a 3D printer, which means the process costs money.