Dont know about shows in your area, NARBC Tinley maybe!!!

as far as being 18 to buy, its prolly a good idea but most people I see do not follow that rule.

For example just this weekend, some place was sellin water monitors and a kid just walks up (prolly about 14) and says "ill take it!" The guy hands it to him bada bing bada boom.

Im not sayin a 14 year old couldnt take care of a water monitor, but odds are not in his favor.