High demand and limited hardware sold to public had pumped miners resell value to record high.
L3+ on sale now at 2040$ + Shipping from Bitmain / December delivery
http://shop.bitmain.com/
L3+ at newegg for 4800$US
https://tinyurl.com/y8flvuas
Miners quickly sales at DHgate, sold out at 2915$ for L3 / 250MHs
https://tinyurl.com/y8wbhqgy
Current L3+ mining revenue is around 20$/day ( 0.04$/MHs * 500MHs )
Mining is high risk gamble, market can turn up or down pretty quickly.
High gain or high loss, first thing to learn in crypto : Invest only what you can afford to lose !