I remember back in the summer of '13, I had 11 GPUs mining LTC, and with the difficulty holding right around 1,000 , I was collecting about 10 LTC per week for a few months.
I remember those days fondly '13/'14. I only had 5 GPU's and a couple Zues/GAW 55nm asics. It was decently profitable in the winter time, not so much in the summer time. The damn garage would get so hot even with multiple exhaust fans. Ambient temps here in so cal in the summer make garage setups tough. When I bbq'd 2 PSU's in 1 week, I had to rethink things a bit