It therefore is wisest to sell weapons that are of a higher level rather than using them in 'recipes' or as your weapon of choice. They will not increase your attack or defence power at all when compared with the same weapon at Lv.
Bear this in mind when you obtain weapons as War Trophies from Monsters. The only difference is that you can sell a higher level of weapon or piece of equipment at a higher price. A weapon of a higher level does not have any more power than the same weapon at Lv. An upgraded crop will not be recognised as upgraded when used in a recipe, nor will a higher level of War Trophy. Whether it is a War Trophy, a weapon or an upgraded crop, the only significance of a higher level is value when shipped. The value of an item when purchased from a local business is twice that of the same item when you sell it or ship it. The section that describes each weapon and piece of equipment will give values as well as the effects of each. This may be the most important reference guide for Rune Factory as it will allow a player to find any item in the game when it is complete. The second portion of the guide provides specific descriptions of each weapon and piece of equipment that can be purchased or forged.
You can find the General Guide at: Rune Factory Harvest Moon Fantasy DS General Guide The first section of this guide gives the entire Shipping List in your Farm Menu with their shipping values as well as the official description of each and the manner in which it can be obtained. Information about all aspects of Rune Factory is provided in my General Guide for Rune Factory. It is intended as a quick reference guide. Where other items are concerned, I am giving specific details as to how or where they can be obtained as well as their values. In other words, where War Trophies are concerned, I am including at least one Monster name and the Monster's location. It is a work in progress at this point in the sense that I am adding all information as to where or how the items can be acquired. This guide will provide a complete list of all items in your Farm Menu, whether they actually can or cannot be shipped.