Hi Fokker,
Welcome to the Aerodrome!

If they are that cheap, "trying to give it away", take some and try it out . Shake it real good to see if it mixes back up, then experiment with a paint brush and some thinner and see how it holds up on a sample piece.
Just a thought. Enjoy your stay.
Best Regards, FOKKERJ
Fokker, Fokker, Hmmm.... Fokker. Damn that name sure sounds familiar!