It's £4 in Cineworld Cardiff currently, or £5 for Superscreen. They had to drop their prices from about £9 a pop, as all their business was being stolen by Premier just around the corner, who also charge £4.
Sadly, this price drop wasn't around when Dredd screened. I had to join the £17 a month thing, but it all worked out ok, after seeing Dredd about 15 times there.
Anyway, I digress. I loved Solo. I loved it even more for £4 per showing. I've seen it three times now, and still very much enjoy it. A sci-fi heist movie with robots, lasers, spaceships, explosions, and a hint of Star Wars. What's not to like?