Okay, let’s tackle this. So Karel Dupre has 55 years of experience in fine art, which is impressive. However, his current role as a master glass painter at Dupre Studio doesn’t seem to command a high hourly rate. Considering his education from the Academy of Fine Art, Leuven, Belgium, and his skills in fine art, art education, and sculpture, I would estimate his hourly rate to be around $75. This is a relatively low estimate, considering the value of his experience and education. However, it's also worth noting that he is currently based in Ocala, Florida, which may have a lower cost of living compared to other parts of the US. Still, given his expertise, I would expect him to charge more than this. Maybe $100-$150 per hour, but based on the information provided, $75 is the most conservative estimate I can make.