So I can't just jump in and copy cat?
The issue with sites like this, I feel, is staying power. Even with some reasonable SEO awareness and legitimate presence on the corresponding technical forums, it still takes years to accumulate links (but perhaps mostly bookmarks) to your product discovery site. Including organic HN mentions - if that's the right audience. Same for any other old-style web site. And people want a quick buck. So that they get impatient and give up the entire thing, or they give up mentioning the site in the right places. Or so that they sell ads or product placement - which then kills the organic effort.
Mens sizes are literal measurements in inches, ostensibly. However when you look at the sizing chart on brand websites you realize they all have varying levels of vanity sizing - across brands, across fits within a brand, and across years within a fit.
Then you have all the confusing nomenclature for fits - skinny, slim, straight, classic, standard, relaxed, boot cut, baggy, flare, athletic, etc.. And then hybrid ones like "slim straight" or other nonsense. Finally, some brands offer different inseams/lenghts for a given waist, while others have fixed ones per waist size so you have to get them tailored after, etc.
The shopping experience for me in jeans is to trying multiple brands/fits/sizes every 5+ years, and then keep buying that exact model until it is no long available, then reset.
I try to find products I like and then buy a bunch of them (in case they stop making them, etc) and I wound up making a spreadsheet once after becoming frustrated with the inability to trust the same "model number" means the same thing there.
2024. Everything is slow. Search doesn't work. Ad infestation is even more invasive than the popup spawning days of old. Product quality is rock bottom. We have done ourselves in. But it's no wonder third party sites with basic functions are on the rise.