Hi Matt
Welcome to the forum.

Just done a search, plenty of on-line stores and reference in OZ
My take on the three elements of The Fenugreek Plant
1. Fresh Fenugreek Leaves (The Plant)
Wash Well, use as a green, i.e. Spinach etc... (An Acquired Taste)
2. Dried Fenugreek Leaves (usually sold as Kasoori or Kasuri Methi)
Sweet, Pungent, Aromatic Herb. (Formerly used extensively in BIR curries)
3. Fenugreek Seeds (The Spice)
Hard Seeds, ground to a very fine powder (usually sold as 'Fenugreek')
Very Bitter, used in masalas, spice mixes. Use sparingly.
Would not substitute the herb with the spice.

Hope this helps
cheers Chewy