These are usually £2.71 each and are meant to be on offer at 3 for £5. They go through the till at
1x = £2.71
2x = £3.24
3x = £3.86
Offer includes the Lavazza Qualita Rossa or Caffe Espresso 250g bags or the Illy 125g Tins (all varieties).
Offer also seems to be available online, although when you add 6 it decides to charge you a tenner. In store I bought multiples of 3 with no problem.
Long dates until end of 2011 so may as well stock up if you drink this.