Some recent market size info:
http://cointelegraph.com/news/11535...er-look-at-the-worlds-largest-bitcoin-economy
It seems that surveillance equipment is one of seemingly legal categories (as far as buying and selling is concerned) mentioned in the article.
http://cointelegraph.com/news/11535...er-look-at-the-worlds-largest-bitcoin-economy
It seems that surveillance equipment is one of seemingly legal categories (as far as buying and selling is concerned) mentioned in the article.