Ideally cheaper than both of those, I'll need a few! Starting a new job that involves a lot of cycling but don't want to dress too bikey. Also, no wool or other animal products please!
My suggestion would be bamboo; similar qualities to merino but no animal products. Plenty out there, but you'd struggle with cheap.
I was going to say Howies but it looks either I was imagining they did Bamboo stuff or don't have any at all now.
There's some cheapish blended t-shirts out there that might be a good place to start, or just go for the standard sports gear route as someone else has mentioned.
My suggestion would be bamboo; similar qualities to merino but no animal products. Plenty out there, but you'd struggle with cheap.