I have yet to find a good deal at an expo, these days you want a deal just check out Lazada or Shopee.

Sometimes if what you are after are electrical goods and you do not care much for the latest or the shiniest then watch out for Harvey Norman's warehouse sales.

Yes, you can definitely find the same thing cheaper on Shopee or Lazada than you could at the expo. Less bullshit too as from experience any advertised prices for items sold at an expo will be subject to stock availability, you show up 20 minutes after the expo opens its doors and you would be told sold out because only 1 or 2 units were available then you would be shown a more expensive alternative.