I made my own math cards, buy white blank cards from Lynhurst street, infront of bus stop, made to order size, they cut it for you. Then buy black or red round stickers, you can make 1-50 as sample if your baby likes it.
For read kit, i got it from singapore for HK$500, exactly same as kinderU last time. Google glenn doman group in singapore and they send you emails if there are 2nd hands for sale, very cheap, got mine there. Problem is if you have somebody to get it from there.