Yeah I'm from SA too and most internet has a pretty low cap with it. I was curious, so I tracked it with Netlimiter.

PartyPoker 4 tables FLSH = (average) 4.2MB p/h download, 0.41MB p/h upload

PokerStars 4 tables LFSH = (average) 2.1MB p/h download, 0.26MB p/h upload

Averages based on my calculation of 5 sample hours for each. I didn't feel like doing more calculations

Don't know if other variants would use more, but I don't suspect so. FLSH hands go by pretty quickly.

Edit: Oh, if you're curious about datamining, PartyPoker 18tables once peaked at 114MB p/h. Now don't ask me how that works... I know the math doesn't add up