If you can't make everything, then you're looking at (for example sake, let's go with the Jade Panther):
20 x Wild Jade - to make these, it's 20 x Golden Lotus plus 20 x Alexandrite - made by Alchemists (you can get lucky by getting a Transmute Master Alchemist to do the transmutes for you and you may get a few extra)
Golden Lotus - only farmed by Herbalists. Not sure on prices over the servers, but say 100-800 gold each
Alexandrite - found when JC's prospect ore a long with many other stones. Can also be found in some mining nodes if you have the special pick.
4 x Living Steel - to make these, it's 6 x Trillium bar per Living Steel (or 3 x Trillium Bar & 3 x Spirit of Harmony). Made by Alchemists - again, getting a transmute master will help with the procs if you are lucky. This also has a daily cool down, so you can only make one per day (unless you use the 3 x Spirit of Harmony option)
Trillium Bar - either smelted from Black and White Trillium ore by a miner, or you can get an Alchemist to transmute 60 bars of Ghost Iron Bar's into the 6 Trillium Bars
Serpent's Eye - made when combining 10 x Sparkling Shards, and these are found when prospecting through Ore. You do not have to be a JC to combine them and make the Serpent's Eye however, so you can get a JC to prospect the ore for you and hand you the Shards.
So 21k is a good buy in my opinion because you're getting all of the above for 3,000 gold
If you're wondering, the professions I have to get my Panthers are a Transmute Master Alchemist and a Miner - I have JC's in guild who are happy to do the Prospecting and making the mounts for me at no charge


