Despite whatever the data shows, Thailand is a poor country and you'll see a lot of women there get forced into relationships driven strictly by monetary reasons. Some parts of SE Asian get exploited (Thailand, Philippines, etc) pretty bad.
I once played a round of golf there on a business trip (a legit top 5 country club) and there were a couple female caddies there. One of the rich locals I went with basically told me that if I wanted to play a '19th hole' it could be arranged and that 'everything had a price.' Keep in mind these are regular caddies, not working girls. Of course I passed but you'd be surprised how many degenerates are just waiting to pounce on the opportunity to exploit these women.
I left the country initially feeling sorry for some of the locals that lived there, particularly the ones living with the unattractive, older men there but if their arrangement is mutually beneficial, I guess there's no harm in it.
The rich and wealthy Thai's however live on another dimension and there are plenty of them that can afford a £580 but I'd suspect these types would rather fly to Manchester on a private jet and catch a real PL game rather than a pre-season friendly.
East Asian countries like Japan, South Korea, and parts of China are a different story. They're wealthy and I'd consider them developed countries, especially Japan and South Korea. Their middle class can afford expensive pre season friendly tickets. I've been to all three countries when I worked as an expat in Asia and I will say that Tokyo and Seoul are a couple of the nicest and most technologically developed cities I've been to.