Jap maples are expensive!$!$! I used to work at a landscaping yard and Jap Maples were being sold for 300 a pop. Granted they were already grown to a height of 3ft or more though. Damn I read that link, fucking bullshit how they raided that guys house just based on an informants word... That should make you think twice about growing outdoors on your property hey? Getting raided because you had a jap maple that was actually hiding a MJ plant, not the greatest idea, unless you have tall fences, cool neighbors and some rottweillers running around your yard warding off any, um informants!!!