have you even opened the link that I gave in the previous message?
All the calculations are there, it's 126 days payback period. Means, you'll get your 1,586 USD back in 126 days, after that miner will provide you only profit.
Disclosure: Mining equipment metrics are calculated based on a network hash rate of 96,130 GH/s and using a LTC - USD exchange rate of 1 LTC = $ 196.3. These figures vary based on the total network hash rate and on the LTC to USD conversion rate. Equipment cost can vary, block reward is fixed at 25 LTC and future block reward reductions are not taken into account. The electricity price used in generating these metrics is $ 0.12 per kWh. Network hash rate varies over time, this is just an estimation based on current values.
You mean i don't need to buy any device? Everything would be online minning? We don't need to setup rig by ourself?
read about it a bit, please.
https://shop.bitmain.com/antminer_l3_litecoin_asic_scrypt_miner.htm
It is a physical device, miner. You plug it in and mine yourself. No rig required, it's already "plug'n'mine" device
but too noisy to keep it at home
I think if we make mining ourself it would be good for us because it's too costly with low earning.
By investing $300 we can make easily $600-$800