Never had any issues buying exp stuff on Laz and Shopee. Bought 3k item, 4.5k item all delivered promptly. These are all isolated cases.But LAz will refund. Not much of an issue.
No such thing as got catch la. Everything i buy from Shopee is so much cheaper than retail shop. Retail shop u can get it on the spot. U buy from Laz or Shopee need to wait for it to arrive. Depends you rushing or not.

I just bough allt my new PC parts from shopee.

For example RAM i got it for RM 187/stick. The exact same thing selling at digital mall shop for RM 215.

My Ryzen 5 3600 i got it for RM729 on shopee. Retail shop selling RM 849

Depends what battery u buy oso la. U buy those weird battery from those shops with not many reviews sure kena la