This can't be correct. The distance is 280 miles, the lowest assuming 25% earning is 70. But there is a 300 avios minimum for EI flights.
The computer doesn't lie.... extract from my BAEC account below:
Transaction date 27-Sep-12
Posted date 01-Oct-12
Description LONDON HEATHROW - DUBLIN (Y/R)EI165(Operated by: Aer Lingus)
Tier Points 0
Avios 75