I get mine here and I also got some there last year. It was basically the same price over there...BUT I think I dropped on a bargain over there as it is much more expensive normally. I use the clear spray Nivea 50+ and at the moment in Sainsburys it's £5.99 a bottle, and I think £5.97 in Wilkinsons. I can't use cream as the stuff sticks in my hairy arms.
Sun cream is often cheaper here. Tesco's own sun cream has an excellent report and was found to have more protection than dearer ones. I have used this many times and found it to be very good at it is only about £3 per bottle. Although do keep your eye out in poundland etc as they often get good makes in for only a £1.