This is a great idea though people that write product reviews will definitely be expecting something in return and since your website is new i will advise you to let the reviewers/writers understand whether they are writing for free, tips or postponed payment.
Yes I am paying for the articles. I will make specific arrangements when people contact me but generally I will break it up into small jobs and pay when it is completed. I can pay in Bitcoin or Paypal or some combination thereof.
hm, paying for reviews i think that is not good idea, on this way you make a "fake" information
writers you will give any reviews which you want, but is not always try.
Like member DebitMe says, to write real product reviews he need to have a real product unit to use, and after that to write about him
regards