I will give you the standard warning I give about the gold recovery...leave it to the experts. The guys over at the Goldrefiningforum aren't going to share a lot of yields with you. I would suggest going out and finding some Free or nearly free items that are just the same as whet you see there. There is a LOT of heavy Plastic weight in those printer cable ends, and a couple of newer processors and a few fingers isn't going to recoup your expense.
Here's a quote from a Refiner buddy...He was running Fiber processors (More gold than the processors in that auction)
I ran a test batch of 50 fiber processors, which is roughly a pound of them (without the heat sink).
I got a bb sized button - I think it was 0.39 grams.
That was from the pins. I haven't incinerated any yet to see what I can get out of the leftovers.
He ran $36 worth of processors (From Ewasted's price guide) and recovered $21 in gold.....Collect free stuff and sell to one of the buyers here...then BUY gold...