In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Wall of Shame. B-Vent Sealer
I didn't know that Tyvek tape was approved for sealing B-Vent. Actually, "sealing" is being generous; the tape was holding the pipe together with a 1/2" gap in between. Scary.
We changed out the furnace, and the venting.