sorry didn't know I'm new to this bitcoin thing
Okay. some questions to ask you are:
1) do you have 110/120 volt power or 220/240 volt power?
2) are you USA based?
3) what does your power cost?
4) how much heat and sound can you take?
5) what do you want to spend?
6) how much can you lose if you spend?
If you have 110/120 volt power you are limited to lessor gear.
Avalon a841 used >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> close to 90 watts a th hard to find
bitmain s9 modded like this
https://www.youtube.com/watch?v=U-tLR6sEVQs >>>>> close to 80 watts a th if you are usa based I can sell you one.
or an Apollo
https://bitcointalk.org/index.php?topic=5314398.0 >>>>>>>>>>>>>> nice gear I have one for the seller. close to 65 watts a th.
most likely all of the above will lose money but can be pretty cheap to buy and run on 110/120 volt power.