You need to open the aperture on this issue.

You seems to fixated on the cost. You get what you pay for with rugs. Long life = Long price. When you amortize the cost, wool is cheaper.

An issue you are missing is style. That fancy vintage kilim rug from Iran that you find on sale that really ties the room together? In 5 years, you can/will realize it looks like hot death now as your style has changed.

An issue you are missing is use case. Dogs. I love them. I have three. I have four rugs downstairs. All made by who gives a shit of I don't fucking care material. Why? Dogs will shit and piss and puke everywhere for no reason as that's what they do. I attack every stain with the finest carpet cleaning fluid on the planet in the finest spray bottle on the planet. One complete unit upstairs and one down. Its the perfect stain system. And while the stains are gone, some rug colors/materials/patterns just can't be saved. To fix this you'd have to research if there is a rug cleaner in your area...have you seen how much it is to clean a rug from a professional (and not stanley steamer in your driveway)?

So I got a bunch of janky rugs as my critters would work against nice and the Mrs's style changes work against nice. These are the points of consideration for you.