Ahhh! Went onto MMB yesterday, offered WT to WT+ upgrade for $179 MIA - LHR, didn't have my bank card with me, so I just logged back in, and now it cost $670.46 again.....

I hope it goes down again before I fly. Oh yeah, on the return flight LHR - MIA they are offering an upgrade from WT to CW for $4446.02, a little bit steep for me