“With dry cleaning , at least with shirts, I have been told that men’s shirts fit an auto iron machine and that hand ironing ladies shirts is the cause for the price difference.”
Very true. Due to differences in the topography* of the bodies. 
(*“the arrangement of the natural and artificial physical features of an area”- per Google. Lol).
@BunsenBurner I never said all women. I said more women.
Of course I know not everyone can do it. But most women can and more women- I believe- will shortly.
Costco tampons run a whopping 14 cents a piece.
D and I stopped using that particularly overpriced ‘female’ razor and switched to a manly brand. Less than half the cost and a much better product.
“But most women can and more women- I believe- will shortly.”
What gives you such confidence? Unless the drug industry and the doctors finally figure out how to dose the hormones properly, feminine personal hygiene industry can sleep soundly.
My solution to the shaver $$: I don’t use them. The hosiery industry should thank me.
@Pizzagirl Congratulations. You’re privileged.
Perhaps there is a bit of a generational divide at work here. I know @romanigypsyeyes is a several decades younger than most of us.
For me, I’ve seen plenty of birth control methods/medical advice over my lifetime that was deemed safe or the next big thing, only to then be pulled off the market, be subject to lawsuits and/or have damaging effects or medical advice that was reversed.
I prefer a hands off approach when at all possible and will leave Mother Nature to her thing.
There’s always the Diva cup. They were around 20 years ago but they’re much more popular today.
How do you make money off something that is not disposable? 
You sell Diva Cup Wash. Brilliant. I think the young generation will toy with the concept and will get tired of it (Duh - it needs washing.) Just like they got tired of kitchen towels and reusable grocery bags and coffee mugs.
“Just like they got tired of kitchen towels and reusable grocery bags and coffee mugs.”
Has that happened? Not where I live.
Where I live you need reusable grocery bags – they charge you for paper bags at the store here!! (just moved, CANNOT remember to take my bags into the store with me even if they are in my car, it is making me crazy).
I buy men’s gray Hanes t-shirts for pjs – soft, roomy, comfy, cheaper than women’s.
The angle of the razor blades (men’s are placed at a more oblique angle and usually closer together, because men generally use shorter strokes—so men get a closer shave but a greater risk of cutting themselves) and the design of the head casing (women’s razors are designed to be better able to gather longer and finer hairs for cutting).
None of this explains any sort of price difference, but there is a functional difference in razors marketed toward men and women. I will say, though, that my wife prefers the shave she gets from “men’s” razors, so there’s a datapoint of possible interest. For my part, I’d happily buy razors no matter whether they were pink or blue or grey or clear, just so long as I get the closest possible shave without cutting myself.
There is a company that sells ladies’ panties, in several styles (bikini, briefs, even a thong) that they claim wick away and absorb menstrual flow, feel and fit like regular undies (no bulky pad), and you just wash them out. They make ones for light days, and different styles for heavier days. Look on the internet, you’ll find them. They also make ones for ladies who “leak” a little (pee), I just got a pair and they are really nice. Another solution for expensive tampons.
I just buy the cheap-o disposable razor packs for myself -.like 20 razors for $1.99. I’m shaving my legs - I don’t need the latest in razor technology for that. Problem solved. Now that’s a category that I think is way overpriced - razors and refills and shaving cream (which is a waste of $ when you can just use whatever soap you were using),
I use hair conditioner to shave my legs. I get a closer shave and smoother skin than I did with soap, without buying extra products.
I buy the cheap disposable razors, too. I have never bought shaving cream, just use my body wash.
I have a Venus razor and like it…blades are a little pricey , but they last me a long time. No shaving cream for me either. My husband’s blades are expensive too ( he has what I would call the male version of the Venus ) He goes through them faster than I do so I suspect his shaving is more expensive than mine
Thank you @dragonmom and @BunsenBurner - I didn’t realize the difference with women’s shirts at the dry cleaners.
I believe it was about 15 years ago when my state finally changed the tax law on belts. Men’s belt were previously considered a necessity and were not taxed. Women’s belts were considered an accessory and therefore taxed.
(we do not have tax on clothing)
@Sweetbeet - I just looked at those panties… It seems like extra work to clean them. I’m a toss in the wash kind of person.
^^ AND they’re $30 each!