Well quite
They don't want you buying a product that then lasts you the rest of your menstrual life, they want you buying their expensive products.
Mine cost £18 about 20 odd years ago,now redundant hurrah
I still use the washable liners I got to go with it.
Let's say the average woman uses £5 of tampax and towels per month
£60 per year x 20 =£1200
Moon/ Diva cup -now £20 - Amazon today
Can't believe it's almost the same price!
£20 plus £20-30for reusable organic cotton pad/ liners.
£50 at most plus washing
Yeah there's a reason they aren't advertised!