Check the listing for details. ANDO AQ6317B PCB Board PRE-910598 from optical spectrum analyzer. Condition: Used. Listed at 500.00 USD. ANDO AQ6317B PRE-91059814 day right of returnLIQUIDATION SALE!!!! We dropped prices on almost all our listings by $400! until 2018! act fast - These deals wont last!IMPORTANT! Due to PayPal's new rule that requires sellers to absorb the 3% fee on any returns. We will need to charge a 3 % restocking fee for any and all returns / refunds. NEW POLICY READ!!! Buyer to pay shipping for both ways for all returns.We will repair all parts and labor for no out of pocket cost to you except the shipping .For any refunds there is a 3 % restocking fee unless the item is exchanged which is easier for us often since we have multiples of these in stock usually . Buyer will also accrue another 3% paypal fee having the money returned by using paypal if paid via paypal originally. (this new rule is because of paypal’s new greedy way of not returning the original fee back on returns/refunds and I regrettably have to bring this new policy to you the buyers.)The point is you will save a lot more money doing an exchange over doing a return