I acquired a tank from a friend with semen and embryos. There's 14 straws of Echo semen (Heatseeker x PB Simi). I wanted more information on him and discovered Cattle Vision has it listed for $50 a straw. Is he that much in demand, short supply, or a mistake in pricing? I keep up with most of the popular sires and was surprised to see this price. I didn't know he was that popular! He was born about 10 years ago.