You can buy the ISO standard for less than US$60.
ISO 594-2:1998
"Conical Fittings with a 6% (Luer) Taper for Syringes, Needles, and Certain other Medical Equipment"
Part 2: Lock Fittings
Price$58.00
Luer taper is 6 degree if I remember right. You can do a web search and get some of the...