The hill is really nice and the panorama from the top looks quite beautiful. It was the highest point I have ever been but I'm not sure if it was worth the price. Overall, pretty ok.
Use the stairs, so your ascend will be more intriguing. In all way up there will be places to stop and art to look at.
It's a bit expensive but definitely worth paying. A short uphill walking from the parking lot with thousands of mosquitos makes the visit a perfect one.