If you think $85 is expensive for a screened baseboard, checkout the Flow ones mate. I was going to order another, and cheapest option is $160 delivered (no pick up option with Flow) and they are not even well made. At least the ones I already have are not, they're shoddy, and I don't think I am allowed to say that on the other forum.
Yeah shame about the SHB, that study looks convincing though and am willing to give it a go to keep condensation in check. Once we get SHB, I will reassess.