Building one of these is not that hard. Get a pump, filter/base, and a barrel. The expensive part is the pump 99$ is about the cheapest and thats for a light duty 12v pump but it comes with hoses and a fill nozzle. Napa has a sale this weekend on filters too, figure about 30$ on sale. then there is the barrel, anywhere from free to $$$$ depends on what you want. Fittings are a few bucks but its reasonable you can build a 55gal processor for about $150. So if you blend about 20 gallons of kerosene with 35 gallons of waste oil your cost for 55gal of fuel is 80$ saving you 140$.....of course you need to pay road taxes if fuel is used on the road. Or buy a better long term pump for 300-400$ and get longevity out of your system. Or let the first setup pay for your new one.