Aldi's running kit is on special tomorrow. Some of the stuffs pretty good for the money. I've used the hydration pack for a while now and am impressed for a tenner, some reflective kit too for commuters.
Piddle/Lidl used to do a similar thing twice a year. I got some good Coolmax type t-shirts in hi-vis and some thin and very compact waterproof jackets (still keep one in my Camelbak to this day) and some running tights.