here's a little more info from Ed Speer.
Thanks for your interest in our new WinterTarp. It's so new, it's not even yet on the website-we're hoping to get an updated website up later this week. We are now making the WinterTarp & have a few in stock. The price is $119 for the tarp itself & $17 for the accessory kit that includes a silnylon stuff sack & 10 NoTangle GuideLines.
The WinterTarp is 10'x11', catenary cut, silnylon, w/ 8 tie outs plus the two ridgeline ties. Two 'door' panels on each end can be left open or closed as much as needed to block wind or rain. While it was only 37F last night, it was very windy & I was glad I had the WinterTarp.
if you ask me, that's not a bad price for a tarp that large, well thought out & with the opportunity for so many variations in weather.
i may just buy one instead of making another.