do you have any DISCO DFG 840 Grinder?

 I received a budget to purchase a secondary DISCO DFG 840 Grinder in Q1, do you have any idled units for sale recently? Preferably a complete unit with 4"-8" Chuck table but it doesn't have to be a fully functional one, we have an engineering team ready. Similar models in the DFG series such as DFG 850 or 860 will also be widely considered.