If this was a competition to win a $15,000 wall oven, would people be worrying about "are they worthy of the oven?", "Do they cook only *very* special foods", "No beginner can do that oven justice!", "Will winning this improve their cooking?", "If you already have a good oven, you deserve this more than somebody with only a microwave", "Have people tell us all what they would cook, so we can judge the most deserving!", "We should have a toaster oven for beginner cooks".
(Actually, the more I think about it, the more I could see such comments being made by those who feel passionately about it)
Cut the pretension, and make it random among active members, with little incentive for anybody new to spam the forum.
Not everybody has the skills to be an award winning chef, but nearly anybody will take pleasure in having a really nice oven - even if they only use it to cook frozen pizzas. Likewise with a scope.
Plenty of people have won a high-end car and not been able to insure and service it, so sold it almost straight away - at least with this scope it should have minimal running costs.