Upon assessment, the technician quoted $450 for a slow draining bathroom sink and another few hundred dollars for the bathtub, for a grand total of $900+ for the two. When I asked what kind of work he'd be performing for $450, his answer was "to remove the trap and to clear the clog using an auger". We discussed no other complications regarding the clog - just the usual build up (i.e., hair). The technician did not mention any complications regarding the set up. For reference, this was at a new-ish building, just under 4 years old.
I ended up going with a competitor for <$150 for both drains.
I did pay ClearView the service call fee of $70, which I thought was reasonable as it seemed like they had very good dispatch system and as fee was to be waived if I proceeded with the service. On the day of the service, technicians canceled twice after they sent the automated messages saying that they'd arrive in 30-45 minutes. So money not well spent I'd say.