@mix_ice....Yeah, if you could have a check around, who knows what you might find. It seems reasonable to think there should be somewhere in Asia that would be cheaper than Europe. Although, Portugal and Bulgaria could be viable European options.
The Argentina option of peoplespeace seemed pretty damn competitive and peoplespeace already has a pretty good idea of venue and prices which is brilliant.
I'm finding it pretty hard here in Asia to hunt out tennis resources seeing as I can't speak Mandarin. Where are you based mix_ice? What languages can you speak?