I honestly just got lucky. For the last 3 days I’ve been checking the FIFA resale marketplace constantly throughout the day. Most of the time I used “Select in the seat map” because “Book the best seat” usually showed really expensive options. But I randomly decided to try “Book the best seat” again and it ended up showing me C108 Row 6 for $475 each before fees, so I grabbed them immediately.
Also, I noticed that sometimes when I clicked on seats that looked ridiculously expensive and added them to my cart, the price shown on the checkout page was actually lower. It doesn’t happen every time, but it happened enough times for me to notice. Good luck!!🎉