AX - How find sales (purchase) price for item

On Released products in AX 2012 you can define Sales price:

So here is code for its reading:

InventTable inventTable = InventTable::find( '5801-105-535-ND_0_0000' );
PriceDisc priceDisc;
PriceCur iPrice;

if ( inventTable ) {

  /* -- find sales price for item, dimension, unit, date and company */
                
  priceDisc = new PriceDisc( ModuleInventPurchSales::Sales, inventTable.ItemId, null, 'ks', 
                             systemdateget(), 1, 'COMPANY_AG' );

  if ( priceDisc.findPrice( CustTable::find( 'COMPANY_AG' ).PriceGroup ) )
    iPrice = priceDisc.price();
  /*else if ( priceDisc.findItemPrice() )
    iPrice = priceDisc.price();*/           

  info( "Sales price: " + num2str( iPrice, 15, 2, 1, 0 ) );                            
}

Output could be:

Sales price: 20.50