Actually, they are made in soft leather. The soft leather shoes really can help baby, I quote the benefit from the website
As your baby’s feet are developing, walking barefoot helps toes get a better grip and develops foot strength. And contrary to popular belief, a baby doesn’t actually need support from shoes. The foot’s muscles are well equipped to do the job.
While being barefoot is best, sometimes it just isn’t practical. Your baby’s tender feet need protection from rough surfaces and cooler temperatures.
I asked some mami who order before. Actually, the final price is still around HK$2xx, not much cheaper than the similar product like weestep or jack&lily selling in HK. They told me even we order 30+, the price is still the same, the difference is we may save some shipping cost.