You've touched on something that the Op talks about a fair bit, but assumes exists without actually verifying that it does: leverage. Your situation is rough,

You've touched on something that the Op talks about a fair bit, but assumes exists without actually verifying that it does: leverage. Your situation is rough, for a few reasons. First, because you're not negotiating with the client directly, you can't really use the fact that you know their product inside and out as a selling point to justify the raise. Second, you've already "proven" to them that it's work that an outsourced contractor can pick up and work on. By no means am I suggesting that you're not uniquely qualified to be working on their product! I'm just having a hard time figuring out how to sell it, especially if your middleman has no vested interest in improving your wage. It sounds to me like your only real move would be to work around the middleman and negotiate directly with the client. That's probably going to violate contracts that both you and the client have signed. Maybe your best bet would be to hold onto the gig until you move, and then look for something in your new location that offers more opportunity for growth.