bbPotato,
the shop is near to the Guan Yin Temple. Opposite the temple, there is a those 2-3 storey tall HDB shophouse which sells alot of buddhist stuff. with ur back facing the temple, it's on the left at a corner, next to the mini road - which u cross over to the hawker (still renovating i think). the shop sells alot of bb stuff also like towels, mittens etc but more for home wear.
if u still have problems finding it, can ask the shops there, where the toilet is, it is just near the toilet.