You can't buy Halo Wars with Microsoft points.You have to use real money.
3600 Microsoft points cost £31.87
Well it all depends on which one. For insistence halo 3 cost around $28.00 were as Halo reach cost around $50.00 for the nomal edition and $80.00 for the legendary edition
1200 Microsoft Points
$19.99
£51.00
If referring to the map packs for Halo 3, (I'm guessing) they are 800 Microsoft Points. Microsoft Points can be bought in many stores, such as Seven-Eleven, Supermarkets, etc... 1600 Microsoft Points costs $20.
It is 800 MP points (microsoft points), to my knowledge. So it is 800 MP points for Singapore map.
around $19.99
19.80
$10 USD.
It costs 240 Microsoft Points, but the cost can be different depending on the region you live in. It cost me 240 Microsoft Points because I live in New York.
$15 it is 1200 Microsoft points