Mmmm difficult one that - obviously it will be more than a mass produced joystick, possibly anything under the £180-200 mark would be acceptable to the WGPAF (Wife/Girlfriend/Partner Approval Factor)

Just a suggestion if I may, you might be better off doing the collective first as there is not a reasonably priced version available at the moment, whereas with the cyclic many people may be happy using their joystick of choice...

Cheers