If you run the auto pricing tool but don't want specific items to be price checked against other sellers (i.e. list at a fixed price instead) you can do this with SellerExpress.
To do this you need to set the product not to reprice, below are the steps to take to do this,
- Go to the Product
- Open the marketplace tab
- Untick 'Price Check'
- Type the price you want to use under 'Current Price'