Performix Plasti Dip – 11 oz. (Add-On Item) $5.82

Amazon has a pretty good price on Plasti Dip if your order is over $25. They also have clear and gunmetal pretty cheap:
Clear for $5.88, also no add-on required
https://www.amazon.com/Performix-11209-Multi-Purpose-Coating-Aerosol/dp/B000LNN11G/?
Gunmetal for $4.94:
https://www.amazon.com/Performix-11221-Multi-Purpose-Coating-Aerosol/dp/B008J20R1S/?
https://www.amazon.com/Performix-…0006SU3QW/