Eve,
on a general overview (i'm just speaking frm wat i know and not wat 'everyone' tiks), if u r toking abt a basic pkg with most of the items like bride's gowns (WG, EG n CS or kua) n bridegroom's suits (equivalent no. to tat of the bride), PS gowns n suits, bridegroom's boutonneire, parents' corsages, car ribbons, car decor (quite a few do provide car as well),etc...then i do believe the guideline is tat the pkg would be ard S$3k++ and above...
pls be v cautious...dun use price as ur eventual benchmark to decide which BS u want to take up with....do consider factors like the number of gowns, OTR or MTM, price for 1 pic top up, etc...
however, do also note tat many BS 'practice' asking their BTBs to top up for fake eyelashes, hairspray?(not sure if have), AD makeup...