I've never used raxflex, but see it on ebay all the time. Consider this, the prices on ebay are about $40 for a gallon, add in hardener which you want to use in enamel, and shipping and your probably near $80. I got a gallon of Omni single stage urethane and hardener for $90 at my jobber about 6 years ago. Maybe it has gone up in price some since then, and other colors may be more expensive. but the urethane held up really well for me. Why not go and check what your jobber has available. You may be able to get a name brand like Centari or a single stage urethane which should be more durable for not all that much more I'd check with your friendly neighborhood jobber, and it would also be nice to be able to get more supplys and questions answered if by some chance you have a problem.