Sure - there's plenty of machines on ebay UK for anything from £250 upwards. Without wanting to get into the "r-tech is just a rebadged generic Chinese machine" argument yet again (let's not!), the OP had asked about R-Tech specifically.
Probably 1/2 the price new depending what condition its in. Also it depends who is around to buy it at the time. Its gonna be a 30kg package if its not a local deal.