http://www.innosilicon.com/html/a6-miner/index.html
3000 usd
but the L3+ most be aquired second hand at about 100-150 usd on ebay
99 + 10 = 109
https://www.ebay.com/itm/Bitmain-Antminer-L3-504-MH-s-USED-LESS-THAN-3-MO-WORKS-PERFECT-NO-PSU/233135144520?
125+ 0 to ship or best offer I got 2 from this guy 110+ 110 = 220
https://www.ebay.com/itm/Antminer-L3-504MH-s-Litecoin-Miner-NEW-In-Hand-US-Seller-Fast-Shipping/223372613479?
I then used the free voltage software to drop watts from 800 to 700
I mine 1000mh at 1400 watts
https://bitcointalksearch.org/topic/m.36338080
so if you want to mine LTC get 2 used L3+ use software from above.
then go to this thread
https://bitcointalksearch.org/topic/ann-futurebit-project-apollo-bringing-asic-mining-back-to-the-home-miner-4974036
buy one from him.
here is my logic he made the pair of L3+ use 200 watts less so his new miner uses 100-120 watts since he saved you 200 watts on that pair of L3+ this miner uses - watts 100 -200 = -100 watts. or 120 -200 = -80 watts.
If you point his new miner to a solo ltc pool http://ltc.tbdice.org/users.htm it is actually miner there for free.
then point the 2 l3+ to viabtc earn both doge and ltc.
the full power foot print is 700 + 700 + 100 = 1500 to maybe 1550 and you are endlessly mining solo for free power or actually for - watts
due to the voltage software.
I know many people would say wtf did I just say sound like BS. Well it all depends on how you look at it.
A) 2 L3+ = 1600 watts without his software
B) 2 L3+ and the new Apollo = 1500 watts with his software
A) hash is 1000 mh at viabtc for LTC and DOGE
B) hash is 1000 mh at viabtc for LTC and DOGE and 100 mh solo pool tbdice LTC DOGE
cost is 220+300 = 520
cost for the innosilicon is stupid at 3000
makes perfect sense
that miner efficiency patch is gold I tell you