Ahem! As Candy's self appointed agent, I am forced to point out that you are in violation of her contract.
I am curious if you have a rough estimate of the cost for materials for one of the cold frames. Granted, it's hard to put a price on the sweat equity involved in their production. I remember the video of @anise harvesting the greens last winter and it would sure be great to be able to do so for myself.
In response to the grievous error indicated by counsel on behalf of said client "Candy", we enter into evidence time stamp 1:08 through 1:11. Please note the top and centre of the screen. Our client was feeling erotic and wanted to do a leg shot and we obliged.
These are "reasonable" in terms of cost. Total cost including lumber, hardware, screws, plastic, and stain was $62.33 each.
This will be a bit of a test as our older cold frames were much thicker stock. We are feeling confident that it won't make much difference. We're going to do a planting each week for the next four weeks and see which planting nets the best result.
Let us know if you take the plunge and make some, we'd be interested in hearing your over winter results, B.
Touché!