So for any practical purpose we have 3 design options in this poll:
1) Open metal structure (options 1, 5, 6). Price something more than the $35K for material, but with a cap at 63K;
2) Steel structure with observation deck (option 2). Price cap at $90K;
3) Curving structure with more enclosed area (options 3, 4). Price $55K – $58K depending on material and phasing.
If we could narrow to one design, that would be a good first step. Price difference at this stage is only significant between the decked and non-decked options.
My 2 cents…