I bought 5 straws of NLC Upgrade Semen(Olie son) at the Frozen Gold Sale in 3-10. We used 2 straws for the planned flush which yielded 27 good embryos. I have for sale the remainin 3 straws. I would take $500 for all 3. I have a shipper and can arrange the shipping. Great quality at a lower price than the owners 10 for $2000.