Flowtec - Rapid Setting Flowable Grout

This Flowable rapid setting grout for paving is getting out of date within couple of weeks. My driveway project got delayed and I will not use this on time €250 for 50 bags (€5/bag), it is about 15% of its regular value. It was stored properly in dry concrete shed. I am still using it, but have surplus I won't use on time This is a real bargain if you in need of this sort of product, but needs to be used in a matter of couple of weeks according to manufacturer's advise