I paid $8,500 for mine in January, and I've made about $1,000 so far with it. Selling it on eBay is starting to sound pretty good. Especially when I could get two L3+ and make about the same per month.
If you are making the same amount with 2 L3+ then you would be lowering your profits since you would be using nearly 2000 watts compared to the 700 watts max(using X11)