Sennheiser HD490 Headphones with Microphone and Amplifier

Hello I have Sennheiser HD490 PRO 250 ohm headphones with Sound Blaster G6 amplifier, and an external UNI microphone attached which is worth 300 SAR, high quality with a mute button. The headphones and microphone have been used for about 4 months, almost like new and clean. The amplifier is two years old. All items are on hold, not urgent to sell, I want 2200 for all of them.