there are quite a no. of shops in Singapore you can purchase from.
One is in bugis area, near the four face buddha, some at orchard midpoint, S.E.X and the City at peninsula hotel, some at Geylang too. Lor 14 and Lor 18
Singapore Online sites includes:
1)
www.sgintimates.com
2)
www.sensual-lifestyle.com
3)
www.u4ria.com.sg
4)
www.esensual.com.sg
5)
www.sexytoy.com.sg
there are more...not too sure. Do a search on yahoo or google lah.