Timely post for me as I'll be headed to Stockholm this summer and was looking up some places to buy film if needed. A quick look found HP5+ at 69 Kr, which is 921 yen, while Yodobashi goes for 1010 yen, so while film in Japan is more expensive than Sweden (that's a sobering thought) it's not a huge difference. Still plenty of choice here: Tri-X, Tmax 400, HP5+, Delta 400, Seagull 400, XP2, Kentmere 400, Rollei Retro 400s, and Rollei RPX400. Seagull is the cheapest at 800 yen, and XP2 the most expensive at 1290 yen with all other films falling somewhere in between (plus 8% tax on all those prices). If you want to bring film and/or buy it here you should be alright. Yodobashi tends to have more selection than any other store, although BIC Camera is a good alternative if they are sold out at Yodobashi (even though they have less selection).