Below are some of the top and best hosting service at Singapore and their price comparison.
Singhost.net – Shared hosting from SGD 168/2 years. VPS from SGD60 a year. SG Domain registration and etc.
Cybersite Services Pte Ltd (cybersite.sg) – from SGD12/month.
IT Works Interactive (iwi.com.sg) – Shared hosting from SGD8/month
AsiaInternet Hosting (asiainternethosting.com) – Shared hosting from USD4.99
usonyx.net – from SGD 80/yearly.
webvisions.com – from SGD150/year.
Above are hosting services provider on Linux/Windows platform. Most have support and sales representative reside on Singapore (please check again).
US based hosts might offer better package and price from USD4, check out my list