In the event of a tie in the cheapest premium rate, who wins the policy? Randomly? First-come-first-served (based on submission date and time)? Shared equally (e.g. 1/2 each, 1/3 each etc etc)? All wins (i.e. 1 policy each for all the companies with that cheapest rate)?
In the event of a tie where multiple companies are offering the exact same price to the same contract, the market chooses one at random.
However, unless the models are very very similar then this is a rare occurance.