Can anyone point me in the direction of what how when and where to buy a used projetor for home theatre I can only allocate about $200-500 and then a screen extra. There are plenty of cheap models on Trademe but I know nothing about this market other than the life of the lamps. $180 for a  Epson EMP TW700 with half lamp life left seems really good or is it just a paper weight Thanks for any help and direction