Lowest cost for paramagnetic paint is with mixing it in your own paint.

For Low cost price buy EL litcoat pigments for paramagnetic and electroluminescent paint.

Make your business, like giving training and selling your products too

This is super bright (or high bright) powder and you need 15 – 20%. It will depend on the paint you are using but generally the ratio for solvents are 2:1 for spraying.
So, in litres the estimate is with 32oz litcoat powder you make 5 litre and dilute with solvent 2:1 that gives 7.5 litre spray-able material. Please note this is estimate only.

Just check out the: “Mixing within your own paint required” category.