WTB Destroyer Cores

I'm looking to buy destroyer cores. If you're willing to sell any, just post how many you have and how much you're selling them for. (Only buying at least 20, any less would be a waste of time) I'll buy from the person with the lowest unit price : Amount selling ratio.

TOTAL DESTROYER CORES NEEDED: 150
TOTAL PURCHASED: 0
BUYING: 150 Destroyer Cores