(http://media.il.edmunds-media.com/toyota/prius/2011/ns/2011_toyota_prius_f34_ns_63011_196.jpg) The 2011 Toyota Prius Plus Performance package, which goes on sale in July, will start at $3,699 for the Prius Two, Three and Four models and $2,999 for the Prius Five, Toyota said on Thursday.