I’ve purchased my fair share of Gillette Mach3 refill cartridges. I’ve received some original refill cartridges and some generic (even though they were advertised as original). Ordering refills are like a crapshoot. With that being said, the Mach3 razor refill cartridges from Groupon are the real deal (original). From now on, I will only purchase Mach3 refill cartridges from Groupon.