I'm fairly sure the supermarkets in the UK are taking advantage of the situation. Seems every week another lump has been added to products.
Oof, 80 baht (the high end, I understand) is a stinger for a plate of street food! Double what I paid 6 years back. Guessing that's similar for a bowl of guay tiew noodles? Remember a little shop doing a small guay tiew for 10 baht when I first arrived. I'd usually have two or three in a sitting, mind.Regarding the average price of an average plate of street food (Pad Krapao Moo, Khao Pat Gai, Pad Prik Gaeng, etc), it's about 60-80 baht which is triple what it was when I first came here.
But you're still lucky for Thai food. Sure, me beans on toast is cheap as chips here but had me a laab moo, yam talay and sticky rice the other day as a treat. Cost me 1,100 baht.