Offered here are ( 5 )New open box SSI Technologies MediaGauge digital 9v battery powered pressure gauge. Part number: MGA-100-A-9V-R. These are new old stock. Box was opened and battery installed to check for function. That's the only reason the boxes were opened. These are new never installed units. Expect to pay over well over $500 if purchasing through your industrial supply vendor. Check the part number to be sure of your application. Please ask any questions prior to committing to purchase. I will ship for free WHEN USING THE BUY IT NOW PRICE. LOWER OFFERS WILL BE CHARGED, IF ACCEPTED, WILL BE CHARGED AN ADDITIONAL FEE OF $8.00 SHIPPING. As stated above this is for 5 boxed units. Winning buyer will receive 5 units.