Alan takes Walden's rhodium and platinum ring to the pawn shop to sell and when the pawnbroker writes down what he's willing to pay for it, Alan has a panic attack. Rhodium is only worth a few hundred dollars more an ounce than gold and platinum is actually only worth about half the price of gold per oz so assuming the metals were mixed in equal proportion it would be worth less than a gold ring.
During this episode, Walden offers Jake 250,000 frequent flyer miles. At the end, Jake is shown in Paris (Eiffel Tower in background). Jake, however, has no idea where he is. How did Jake make airline reservations without choosing a destination? How did Jake exit US/enter France without a passport?