I priced by LHR-DUB & when my trip was confirmed I went back in the following day to actually make the booking.
Prices for every flight that day had gone up to more than £100 more than any CE seat.
I checked to see if a big sporting event had been announced in the last 24hrs.
There weren't so I went back tried the same booking without logging into my exec number & the prices had re-set.
I logged back in & tried the booking again & the prices had risen across the board once more.
I have held off making the booking but I'm guessing that ba.com's system had remembered my dummy bookings leading up to this & some glitch had thrown up these increased fare offerings.
I hope that's not the case though