I just measured with my calipers. It’s not 100% accurate since the hem made it tricky, but I get .15mil for the Company Store sheets, and .35mil for my Berkley Jensen set. Lands End comes in right in the middle at .25mil. If you did not see my comment above, My company store sheets have torn multiple times (I patched them).
Bummer. Ours are from 6 or 7 years ago and have held up well. There’s always a chance they’ve decreased the quality in recent years.
Mine are about 2 years old