Where is bloody stage 3, page-5

Having a 13 month old myself highlights the demand for Staged formula. You're likely to see much more stage 1 available on shelves as most mothers will attempt to feed the baby in the first 6 months on breastmilk. A lot will give up due to complications or inconvenience.
We had to comp feed (breast + formula) to increase calorie intake.

Stage 2 will always fly off the shelves as babies insatiable appetite grows, convenience of bottle feeding and parents want formula enhanced with vitamins/minerals.

I'm surprised you mention stage 3 being popular. I would assume less people buy this as babies can start transitioning to cows milk from 12 months and that is much cheaper. Ours is lactose in tolerant at the moment so will likely continue with 'de-lact' formula for the next few months.

My guess is the Chinese will lap up stage 3 formula and I am not sure how many local mothers would buy as our fresh milk is good quality.