I have one of the cheap Chinese Lotos plasma cutters and they do use up tips but the price is under $300. Here is a link to an ebay listing. if you buy one, also buy a supply of comsumables. It works well but you have to supply it with 220v.
http://www.ebay.com/itm/LT5000D-LOTO...item3a6c05ccf2
This is not a high quality macine but it does work and the price is easy to swallow.