Here is a company near Santa Barbara that makes nice looking greenhouse kits.
Buy a greenhouse kit and build your own greenhouse from SBGreenhouse.com
For their "standard kits" they say they offer either corrugated polycarbonate glazing or 6 mm double wall polycarbonate.
standardkits.html
The price sheet though only shows options for either 4 mm or 6 mm double wall polycarbonate.
Polycarbonate is very tough, it is not likely to break. But it can deform and pop out of a frame. I would think that the 4 mm double wall and even the 6 mm double wall would be very flimsy and likely to pop out of the frame in high winds. The corrigated material might better withstand high winds but it won't give as much insulation from cold.
I used 16 mm triple wall polycarbonate but I paid probably more than $3.00-$4.00/sq. ft. for that material. This material is strong enough that I can put my full weight on the roof panels.
I would call the SB Greenhouse people and ask them about the ability of their greenhouses to withstand wind.
Here are their prices for "complete" packages that include heater, ventilation, mist, benches etc :
Specials
Here is a place that sells components if you want to build your own polycarbonate paneled greenhouse:
Multiwall Systems