Please before you buy anything check out this site:
http://mining.thegenesisblock.com/If you have the specs of any mining machine you can put it into the calculator on that site and it will tell you how much you can expect to mine.
Remember every month in is harder and harder to mine for BTC so you will have to constantly keep upgrading to new machines if you want to make some profit.
There is a lot you need to know in mining so do your research before you spend some $$$
If you decide to get into this kind of business and you purchase your mining equipment keep this thread updated.
Best of luck!!
http://mining.thegenesisblock.com/Great resource and good articles on the bleeding edge of the industry.
There are a few strategies you can look at,
1 buy your own equipment host it yourself, and pray that it makes it to you on time.
The risk is that the company will not deliver on time or just disapear. Its happened before.
2 buy into a trusted "group buy" of a bigger system with others. Make sure that there is an "escrow"" option and the organizers identity has been confirmed by a trusted 3rd party (John K is well known here for this escrow service)
I am personally invested with a few of these.
3 you can buy shares of an existing mining company that is already up and running
markets that let you buy shares of companies like this can be found:
https://btct.co/ https://bitfunder.com/Always do your homework and verify the facts.
Hope this helps..