IjudgebecauseIcare
If you want cheap: I went to Golden Peak Tailor in World Wide House, Central last month when I visited HK. I paid $2,200 HKD for a suit with an extra pair of pants. Quality is meh, you get want you pay for. Put my order in on a Tuesday, fitting on Thursday, picked my suit up on Saturday. I am from the US, so a tailor suit under $300 USD is a steal. So for me, it's worth it. Probably will go for something more expensive the next time I visit. (Source: Reddit)
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