If you're talking cheap, you'd probably have to talk about Leo instead of Chang. IIRC, Leo is the cheap version of Singha. I think there is a cheap version of Chang but I can't remember what it's called. Singha has a higher tax rate than Chang in Thailand because it's considered to be more of a premium beer.

Chang is probably the best cheap beers of the ones I can get easily at the moment (if only Shiner Bock was a cheap beer for me... ) but it's only good when really cold. I can handle Singha when it warms up a bit but not Chang.

In the late '90s, San Miguel from the Philippines was more expensive in HK than the San Miguel that was brewed in Hong Kong. For a while, it was trendy to be seen drinking your San Miguel from a Filipino stubby rather than a regular bottle. Don't know if that's still the case.