IIRC the key difference is that it’s smoother/softer and doesn’t feel itchy. I only own merino wool stuff though and can’t remember last time I wore regular wool, so not sure of other differences.
Bought a bunch of long sleeve shirts from Costco (like 15ish?) when they were cheap, as low as $6 per shirt as well as their Kirkland socks (for women, men’s are garbage) so some good deals can still be had there on certain products.
Only saw 50% merino wool/synthetic mix base layers though for sale there, but I know Ice breaker can occasionally have decent sales, but their prices have gone up over the years and quality down a bit since they move production out of NZ.
Edit: I think I first saw the shirts in UK, but only bought them in Canada and they’re made in Canada. They’ve doubled in price (non sale) in the last 3-4 years, but still cheaper than anywhere else and could be used as base layer.
Lmao, there were so many adds I switched to apps only mode ages ago. And they technically still advertise shit at the top, but only 3 things at a time and only pictures (for now?)