I really like clothes with some technical element. I was surprised to see on the Outlier website that "riding" for them meant "bicycle riding," since "riding pants" already exist and the riding involved is atop horses. What I also found interesting is that these seem to be very similar to the usual jodhpur stretch pants without the additional styling and stitchwork specific to horse riding, which gives them a less horse-centric look.
Still, if the idea behind these pants is that one can wear them on a rainy commute without being drenched from the waist down for the next 3-4 hours, that's a pretty nice feature. The price on these pants is the same as other "designer" or "low-production" pants, but these offer a few more benefits compared to the typical fancy jeans. As is typically the case with nicer clothes, what you usually pay for are higher quality fabrics, higher quality stitching, clothes that can be altered if needed without destroying the item, and production facilities that are acceptable to most westerners.
You can get cheap, stiff work clothes that you can beat up, but the idea behind more expensive items of clothing (ignoring the premiums on purely designer clothes) is that they will last longer, look good, and be more comfortable. For the nerds, this is like Vimes boots theory.