Sorry if this has already been posted but I couldn't find it anywhere...This is taken from moneysavingexpert.
Here's the deal.
Vina Sol is selling at £5.98 in Tesco.
However, buy six bottles and you receive 25% discount, bringing the total to £26.91
The best part of all of this is that they are doing a promotion which gives you 150 points on your tesco clubcard for every bottle which means if you buy six bottles you will have 900 points plus the usual 26.
Each 1 clubcard point while worth 1p in store can be swapped for 4p of Tesco Rewards. Hence 926 points is the equivalent of £37 in rewards which can be used to fund a cinema trip, a meal out etc.
So basically, if you use the Reward to purchase something you could have bought anyway, you can buy 6 bottles of wine and make £37-£27=£10 profit!
There's also no limit on the number of bottles you can buy
MoneySaver m_will has found another points offer on Marques de Monistrol Vintage Cava Brut. Bottles are 10.99 each but you get 300 bonus points per bottle. And until Sunday buy 6 bottles and get 25% off. So for a £49.50 spend, get £72 in vouchers. It's worth noting this Cava can be bought cheaper elsewhere though.