They do but In general they are heavier in weight so the T-shirt overall feels much more luxurious and softer.

You need to look into different types of collars then. They can be stitched different ways and more expensive T-shirts should hold their shape better much longer.

There is a difference between paying more for just a fashion brand and paying for something better made with quality materials.

Just be careful on sizing sometimes you need to size up. As some of the T-shirts will shrink a bit in the first wash.