What's the best platform to buy Apple products other than Apple website?

1) Shopee. Only buy from SG sellers and confirm that they are sealed (box unopened), non-activated (phone hasn't been turned on), new (no refurbished), SG version, so can get Singapore Apple warranty. If the phone is not a Singapore phone, you may have issues with the singapore apple warranty. You can verify the region code. Singapore is ZA.

2) Carousell. Buy from ppl tryna get a quick buck from their teleco plans. Make sure that they provide u wif the telco receipt and that the box is sealed. Must be sealed. Some telcos will open the box to show the customer that the phone is working. They will likely activate the phone too and the warranty starts. I got S20+ via this method and can b done with apple products too. Back then S20+ on Samsung and challenger is 1.5k, I bought from carousell at 900.