I often visit Batam & JB. It is common to see Spore uncles & aunties making day trips there. With the strong $SIN dollar everything there is cheaper e.g. food, haircuts, massages, shopping,.... For example a 1 hour body massage is only $100,000 rupiah. That is about $11. The cost of a haircut at a barber is about $2 - $3
When I am there I always go to A&W for root beer.
Where can you find such prices in Spore