50% off Iceland Cheese

Just been to Iceland, at the checkout I was given a voucher for 50% off Farm Vale cheese blocks (Icelands own I think?) because I needed some cheese I went straight back assuming I could only get one block, but no. I just brought £44 of cheese for £22
This makes the big blocks of mature coloured chedder about £2.25 a kilo. The 250g blocks of cheeses such as wensleydale and cranberry or cheshire are included as well, working out at less than £5 a kilo for them.
I did scan my Iceland card, the guy on the till said not everyone gets the voucher but I told a fellow shopper and she got one too. Got to be worth a try if you are around an Iceland. I have never got cheese this cheap before so think this is a grab it if others can get it.