Anything? Been searching a bit, and still found no solutions...

Heya all
I've been trying to find a way to use more GPUs for Octane Render in OS X, and so far, sadly, GPU Xpander is the only solution i've found. To say the least, I find it not only way out of my budget, but extremely overpriced; The price of two used Mac Pros is simply not worth it for that ...