1 dollar routes?

I was looking at one of my route I made, and one of my competitors for the economy class had their prices for 1 dollar only. They spammed loads of airlines, than what was needed. My question is how does this even work, when i try to do it, I go into the negatives. Has reputation got anything to do with this? because my competitor has a really good reputation.

Well they probably had tons of money and waited out the competition.

I notice to if you add flights without 3 classes the prices for the unused classes will be set to $1. Makes a little sense since there are no seats but I'm not sure if the program looks at $1 vs $1,249 for a 1st class seat as a good deal when dividing the available traffic betwwen the airlines.

When I try to match his $1 price it seems the program reacts as if it's odd to charge $1 for for class yet 100's of dollar for coach and the equation lower price= more pax isn't necesssarily true.