Amazon has Sennheiser HD 598 Cs Closed Back Headphones for $100 + free shipping.
BuyDig via eBay has BeyerDynamic DT-880 250 Ohm Premium Special Edition Chrome Headphones on sale for $149.
Google via eBay has Google Chromecast Media Streaming Device (2nd Gen) + 3-Months HBO Now Service Trial on sale for $25. Shipping is free.
Note, once your three month HBO Now service trial is complete, you will be billed at the standard monthly rate of $14.99 unless you cancel.
BuyDig via eBay has Audio-Technica ATH-M20X Professional Monitor Headphones on sale for $25.