Nationwide offer. Pack states 26 'standard washes' which nearly equates to the 2.16kg powder box (27). Used fairy tabs/powder for years, can't see any current offers on either. Tried this as a trusted brand - worked fine. Suggest you stock up until to save a few quid as much less bulky to store than powder. Next cheapest I could find was £6.98 at Ocado. First post so apologies for any omissions.