On AA.com I have managed to price AMS-LHR-JFK-XXX-ORD // ORD-STL-DFW-ORD-LHR-CDG FOR £697. I make that 660 TPs and it's pricing as £697 so just over £1 per TP. ORD-LHR is on the AA 77W too ^

This can be done over Easter weekend too for those who don't want to take leave and I can think of worse places than Chicago to,spend a weekend.