Selling on CL is a huge annoyance. I've tried to sell a number of things there, and mostly get flaky "buyers" who never respond back after their initial "I'm interested" message. Then you have the problem of giving your home address to a stranger. I'd be open to trying this service if they ever expand out to the East Bay. I've got a bunch of stuff in my garage I'd love to sell, but the existing channels (CL, eBay, etc.) are total pains in the ass.
And from the other point of view, I've sent reasonable offers (based on local market rates) to sellers that "Had to have it gone by the end of the month!", gotten a "No way, I paid $X for this new just 12 months ago!" only to see it relisted the next month.
This system makes that "Get it gone now!" constraint real.