wah you are right man, $899 only damn!!!
Placed an order just now, got $81 cashback in total, haven't take into account Grab cashback campaign yet, since when I try clicking on the "Get Cashback" button on the event page, it gave me an error saying something about event cashback balance ran out or something, so not sure about this. Though for the $81 cashback, you can get it quite easily, here's a breakdown:
1) Apply Qoo10's 10% voucher (capped at $50) to get $50 discount.
2) Get a Grabpay account and link to Shopback, topup 899 (949 - 50) to Grabpay (please do not use credit card if you want to get your Grabpay balance back).
3) Register a Shopback account using a
referral link to get a $5 cashback.
4) Leverage on Shopback's new user event and buy the Qoo10 store credit $5 voucher and get 100% cashback. So, on your Shopback homepage, you should see $10 cashback (5 + 5).
5) On Shopback again, buy separate Qoo10 store credit vouchers. For me, I bought a $500 one and got $10. Then, a $300 one and got $6 cashback. Now, my Shopback account has a total balance of $26 cashback (5 + 5 + 10 + 6).
6) Top up your Qoo10 account with the store credit you just purchased, via My Qoo10 > Q Account > Gift card.
7) On Grabpay, you should get 2850~ points, by spending $800 on Shopback. (I'm a Grabpay Silver Member, so no need Platinum tier) You can now use your 2850 points to redeem another $5 Qoo10 voucher, and top up to your Qoo10 account (refer to step 6).
8) Enjoy your $81 cashback and get a Pixel 6 at $868
P/S: I did not really do much calculations on the rewards tier and stuff like that, so you may do so to maximize your cashback.
Also, the balance on both Shopback and GrabPay can be withdrawn and transferred back to your bank account. Though, for Shopback, you need to wait a while, apparently.