Mastering Multi-Agent System or distributed artificial intelligence is a science and art that deals with the systems of artificial intelligence network. Within this scope mechanisms called electronic trading protocols are handled, representing the patterns or set of rules that model the possible interactions in the system. This investigation is aimed at improving the electronic auction process through the use of electronic trading protocols in Multi-Agent Systems. As part of the paper submitted evaluations of some quality metrics are described and evaluated, in order to analyze the relevance of the application of certain electronic trading protocols in Multi-Agent environments. The metrics chosen are associated with the quality criteria: Rapidness, Efficiency, Scalability and Completeness. Two of the Trading protocols most known and defined by Foundation for Intelligent Physical Agents (FIPA) were used to obtain important results: FIPA English-Auction and FIPA Dutch-Auction. In conclusion, Multi-Agent Trading Systems are a very effective alternative to take into account in those environments in which it is necessary to choose a Trading algorithm or strategy depending on certain circumstances.