The limit I think was more than S$200 back then...guess now you can only but
buy back one 7kg bag or get a receipt that says the bag of 7kg cost RM70...be creative, get the pet shop that sells that, write you a receipt & buy 3 bags...not too many, 'tau chiak' must be smart too.
There r cases where ica offrs (when in doubt) chk on line on the prices of goods u bought fm jb. U under declare u face the music. Just be prepared.