Hi,
I am trying to find a company / Bounty Hunter to recover some BTC I had stolen.
Has anyone had any dealing with
www.darkwebsolutions.com 
?
I have been in contact with them and they are confident that they can get my BTC back, however they want $500 up front.
Naturally I am suspicious. Why not just include it in the 10% fee they take from the amount recovered.
Any help or alternative suggestions most welcome.
Don't fall for this trap, confident that they can get back your bitcoin? How? What process?
You know that bitcoin address has no name right? If the one who stole your bitcoin used a mixing services then I doubt that you can recover it. Although there is blockchain analysis, criminals is one step further, they are not that dumb to just expose themselves in plain sight.
So I advice you to not pay them upfront and do their thing and just tell them to include it to the 10% fee. I'm not sure though if they are trusted on the first place.
How much did you lost though?