good evening estimated
I was looking at pages to buy mining machines
You always have better choices. I don't know how you came across coinminer but all the simple google reserches would lead you to many good factories working on mining stuff.
You are looking for the good choice for a new investment. Just be aware from fake offers, there are a lot of them arround.
I would always recommend this forum to searche for best results about whatever about crypto. Don't hesitate to ask again about whatever you don't get ensure with .
Mining board:
https://bitcointalk.org/index.php?board=14.0