Future Purchase on the 28th

I get paid on the 28th so I'm looking at what I'm going to be buying. Right now I have a few things eye'd out on Amazon. Three ASIC USB Miners and another 9-port USB 3.0 Hub. That'll come to about $230. The 3 miners will profit about $116 per year, so I'll have all the equipment payed off in about 2 years just running the 3 miners.