I am trying to gather information about the WACO Beta Sailplane. How does it fly in comparison to say a Merlin. I am helping my dad clear out some of his old projects he never got around to completing. We came across a brand new in box WACO Beta with the upgrade kit that I guess dad paid around 310 back in 97. We are trying t get a gauge what it would be worth and what they flew like from guys that have them. Thanks