The sale price of Light Discs has been reduced to slightly more than their materials the Destroyer's drops are still fairly valuable, but Light Discs no longer provide a major bonus to their value.For all but these, bars sell for the same as the ores that went into them. With the exception of Meteorite and Hellstone, crafting your ore into bars is no longer needed for higher prices.When your NPC housing is set up properly, this is good - happy NPCs will buy items from you from a higher price, giving more value to your farming or collecting. NPC sale and purchase prices are no longer exact, but can vary according to the NPC's ' happiness' status.
While the general trends may hold, a number of specific exploits have been fixed. This Guide was originally written for version 1.3.5, while Terraria has since updated to version 1.4.
