Example: The cheapest tickets in Section 210 (club level looking up the 1st base line) at Nats Park for a game on Sunday 7/9 against the Rangers are $94 (before fees). Tickets in Section 227 (club level looking up the 1st base line) for the Nats game in Philly on Sunday 7/2 are only $74.
Maybe the DC area is slightly richer than Philly, but given the MASSIVE disparity in the prospects of the two teams, it still doesn't add up. I think the Phillies games are priced right but the Nats are WAY over-priced.