The new Ariel Excel Gel is only £2 at Asda at the moment, and its great stuff, even on low temperatures, it says on the telly you can even use it at 15 degrees, i dont have 15 on my washer but used it at 30 degrees and its brought my clothes up a treat AND its better for the environment at a lower temperature
18 washes for £2, now thats what i call cheap