I've noticed it with 2 items so far - Striking Island Marauder Top and Light Mage Amulet. The autopricer shows the current lowest price of Striking Island Marauder Top is 4899 sP

But when searching user shops, the lowest price is actually over 13M sP

I also experienced it with the Light Mage Amulet, but I currently don't have it in my shop so I can't add screenshots. This makes the autopricer price items way lower than they should be. Can you please look into it?

Yes, it still happens