No... it put it my cart for $399 and clipped a $50 the coupon. When the prime day sale started at midnight for $349, the coupon stacked (but was otherwise unavailable). I think I got lucky, and the system was delayed in disabling the coupon for me. Here's the exact link I used – but buyer beware, the seller looks particularly sketchy. It arrives tomorrow and I can update if you'd like (it's returnable if it arrives fucked up).
I found another – $354 less $30 coupon = $324. I realize you're in Singapore, but maybe useful for others. Possibly a sketchy seller too.
If you want more power, these are monsters. Can confirm, have used.
These list at a high price from Dell but there are very frequent massive drops of off-lease units from like 10th generation (this link is a 12th gen machine) with six core i5 CPUs and these companies blow their "old junk computers" out for under $500 (sometimes even @ $300) all the time. You'll see lots of 20 of them listed on places like craigslist, ebay, kijiji, etc. They usually sell individual units.
If you want a machine that has discrete class graphics, Beelink also makes a lot of Ryzen based machines. From the SER5 on up you can actually have a very decent content creation experience, gaming experience, and general use experience.
$339 for a six core Ryzen 5000 CPU, decent integrated GPU for games like GTA 5, Overwatch, Fortnite, PUBG at low to medium settings, 16GB RAM, and a 500GB SSD. Wifi built in. I challenge you to find a better deal in a brand new machine.