The best last-minute audio deals for Amazon Prime Big Deal Days

Update, 7:35 pm ET, Wednesday, Oct. 7: We rechecked every price on Amazon this evening. The Beats Studio Pro are now $149.95, four listings came out because Amazon no longer shows a buy box for them or only one third-party unit is left, and several prices and Prime labels changed. More deals are in our live Prime Big Deal Days roundup.The Beats Studio Pro are $149.95 on Amazon until the sale ends at 2:59am ET Thursday. That’s half off their $299.99 list price, and Amazon doesn’t requ