Is it ? For 35mm I can see Portra 400 discounted in quite a few places, not so much Pro 400h which seems to stick to it's £11ish price.
120 looks to be roughly similar between Pro and Portra
I can't comment on 135, as I haven't shot it in years, but I've been able to purchase 400H for better prices than Portra 400 over the last few months. In fact, just a short walk up the street is Calumet/Wex and they are selling 400H in 120 for just under £30, which looks to be the best price in the country for the two films (except for 7dayshop who are currently out of stock).
It's a bit of an ebb and flow, however, as Portra 400 in 120 was cheaper at this time last year.
Ultimately though, the price differences in the UK pale in comparison to Japan where Portra 400 was nearly twice the price of 400H! It made my purchasing decisions very easy.


