We contacted Rooter Plus to clear a drain at our h...

We contacted Rooter Plus to clear a drain at our house, somewhere under the lawn. The technician arrived, took a quick look, and after 10minutes of "working on a quote" came back with a quote of $475,-. Quite expensive, especially since there was a whole list of potential "extras" that could add up to the final cost depending on their "findings". Anyway, that's not my problem with that company, it's a free world, they can set their pricing however they want. So I told the technician I thought it was too expensive and thanked him for "coming out" and that I would look for someone else to do the job. His response ? "Wait, I can give a discount; $415". That is the point where I had a big question mark floating above my head. Me - "No, that's still to expensive, I'll find someone else, thanks though." Him: "$350,- then ?". Me - "Hey now, what is this, a bidding game ??". So after some more back and forth and me telling the guy he should leave, he came back with a final "Company Special" of $99,-. I know I should have still told the guy "No" but after a whole sunday of working on the problem with my plumber, and renting gear from Home Depot etc, I OK'ed the "Company Special" just to get the job done before sunset - it's not very comfortable living in a house without a working drain...
I don't blame the technician that came out (even if this particular guy had a "serious attitude") because I'm sure he is just following company policy and he can use the extra commission, but I do point a nasty finger at the management of Rooter Plus because this is a particularly despicable way of doing business; a lot of vulnerable people would just go ahead with the initial quote, what else can you do as a mother with kids and no working drains ? and they probably end up paying even more than the initial quote.
Yes, management of Rooter Plus, I understand you don't do anything illegal, but trust me on this, your business ethnics... are simply despicable.