This is just my 2 cents.....
I don't think you need any $100 fluid bed.
Never even heard of such a thing & I've tied loads of jigs.
Pour the jigs,
heat 'em with a lighter,
dip them in the powder paint,
cure them in a toaster oven if you want,
& dress them to fit your preferences.
Heck fire, we're talking about JIGS here...
You might lose it on a stump the first time you cast it out!!!!
No big deal...keep it cheap & just tie on another one.