BuyDig offers the Westone Adventure Series Beta High Performance Earphones, model no. 78401, for $49 with free shipping. That's a buck below our mention from last month and the lowest total price we've seen. (It's also the best price we could find for these headphones in sufficent stock today by $31.) They feature 6.5mm micro drivers, an in-line microphone with remote control, replaceable cable, frequency response of 20Hz to 18kHz, and travel case.