Just bought a matched quad from Peter yesterday for $50 at Vacuum Tube Supplies. Absolutely nice and professional people to buy from with especially when I bought 34s instead of 84s. Not a problem exchanging them.
http://www.vacuumtubesupplies.com/
info@vacuumtubesupplies.com
http://www.vacuumtubesupplies.com/
info@vacuumtubesupplies.com