The autopricer keeps your price when you're already the lowest.

If your shop held the cheapest price on an item, the autopricer tried to raise it to the next seller's price instead of leaving it alone — so being the lowest seller worked against you. Now the Lowest strategy never raises an already-competitive price: if you're at or below the cheapest other shop, your price stays put, and the nightly Auto Auto Pricer leaves it alone too.