Prices are fair but not super spectacular. A new ATAS-120A goes for about $325 or so. The FT-857 is new about $850. I think he's actually quite high on the power supply. A brand new Astron SS-25 goes for $100.
Yaesu FT-857D & ATAS-120A - $950 (Trinidad/Denver)
I have a used Yaesu FT-857D with ATAS-120A antenna, and Radio Shack 25amp switching power supply. I have homemade separation cables but no bracket, no long power cable, no owners manual. All three are used and have cosmetic scratches etc. but otherwise work 100%. The 857D does have a short power cable with Anderson Powerpoles so you can power it anyway you like. $950 shipped for all 3, or separately $650 shipped for the radio, $250 shipped for the antenna, $100 shipped for the power supply. I can also meet you most anywhere along the I-25 corridor from Longmont to New Mexico. If you would like to meet the price would be $900 for all 3 items.
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"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein