Ironically my safety razors are Gillette brand but I bought a big pack years ago and haven't had to buy any since. Recently misplaced the box in a move so I might need to order more if I can't find them but "lost all my excessive amounts of razor blades in a move" is a lot nicer of an economic picture of safety razors than running out lol.

I'm a lady too... Lady razors are soooo expensive. Learning to shave sensitive areas was intimidating but the safety razor is amazing. I have super sensitive skin and boar bristle hair so the safety razor has been a game changer in terms of ingrowns and whatnot. I get an extra 12 hours or so without the stubble growing back too compared to conventional razors. Cut the outside of my ankle once but that's the only accident I've had lol - the trick is not to apply pressure like with a conventional blade because the safety razor does the work for you, and don't underestimate the delicate region on the outside of your ankle lol). It's not just economics - dragging just one super sharp razor across your skin is much gentler on your follicles than 5 less sharp blades (since conventional razors have multiple blades, each one passes over the follicle). Shaving the same area 5 times with the safety razor would still cause less trauma because the blades are sharper.

It's been 5 years and I haven't bought new razors or had nearly as much razor burn or ingrowns ever since! And of course my legs are much smoother and the shave lasts much longer (which still isn't much for me since I'm part sasquatch but still).