Woolies has Huggies Ultra Dry Boys Nappies Size 6 (30 pack) for $10.00 right now, which puts it $1.50 under Coles ($11.50) for the same thing. If you only need a top-up pack rather than a full bulk buy, that's your best bet at a major. Size 6 is the big-kid size for toddlers 16kg and over, so once you're here you know the drill: these go fast whenever they're on special, and restocking mid-week is never fun. IGA's also running a solid deal at $9.90 (down from $15.25), so if there's one near you that's worth a look too.