Mathstart is sold at $40 at Dymocks. You may get 10% off (i.e. $36) if you use HSBC Platinum credit card or show you HSBC previledge card. Discount offers valid till 31.12.2004.
I have no comment on 未来精编启蒙数学 cos I do not have those books.
Regarding your question of which language in teaching Mathematics will be more easy, I think it all depends on which language that you and your baby are more familiar with.
There are 12 levels (total 66 books) for New Reading 360. Each level contains 4-6 books. Each books has ~ 8-16 pages for level 1-3 and about 32 -40 pages for higher levels. Each page has color picture with few sentenses for low level and half / whole page of paragraphs for the higher levels.
The CDs are sold separately with the books.
(You may also search through Amazon.co.uk to find more information.)
Level 1: a pack with 6 books + 1 ex sheet ($12)
Level 2: a pack with 6 books + 1 ex sheet ($12)
Level 3: a pack with 6 books + 1 ex sheet ($15)
Level 4: a pack with 6 books + 1 ex sheet ($20)
Level 5: a pack with 6 books + 1 ex sheet ($24)
Level 6: a pack with 6 books + 1 ex sheet ($24)
Level 7: a pack with 6 books + 1 ex sheet ($26)
Level 8: a pack with 6 books + 1 ex sheet ($30)
Level 9: a pack with 5 books + 1 ex sheet ($30)
Level 10: a pack with 5 books + 1 ex sheet ($35)
Level 11: a pack with 4 books + 1 ex sheet ($30)
Level 12: a pack with 4 books + 1 ex sheet ($40)
They are available on DD also, but DD offers 5% off only.
The printing quality of the books are just "so-so" and the paper is rather thin. However, the contents are good and it's only about 1/20 of the original Uk version. (For those interested, you may take a look to see if you can accept their printing quality.)
Did the sales charge you the price of the CD for the set of New Reading 360? I found that she forgot to charge me the $ of the CDs and I've called Ms. Fong to remind her and I'll pay her back next time!!