nougat is actually
cheaper in Singapore! 
buy the touristy crap
like coin pouches made from kangaroo scrotum skin and other stuff
you can't find here...
as for makan, go eat
their LOCAL food there... no point going there and then looking for
their crappy version of "Singaporean" food...
remember.. Singapore
is one of the great ports of the world.. and our GST is very low
compared to their taxes so chances are, you can find their stuff
back in Singapore cheaper than they sell it there...
Asian food is OK, but provided you do not eat it at food courts
(food courts are opened by Singaporeans who migrated over and
charge tourist prices, whereas normal Asian family restaurants
charge about the same price as Singapore.)