Just picked some of these up in Sainsburys, two options.
First is a pack of 10x disposable razors for 99p that are on offer for BOGOF, this effectively works out at 99p for 20 razors.
Secondly is a pack of 20x disposable razors for £1.59 that are also BOGOF, this works out at £1.59 for 40 disposable razors.
Both packs either come in classic or sensitive.
Great offer i reckon