Yes - it is clearly hit or miss, since they change their wines every Monday.
That said, if you are familiar with the wines being offered you are likely to get 20-50% off winery list, which even including shipping is a great deal.
Occasionally, they sell out early in the week and sub a new three pack.
Other sites with similar themes but post daily are
And good wine until gone, but I can 't find the site at the moment. I'll research and post it when I can.
I love the wooters, great forum site, the winemakers usually join in the blog and discuss their wines, process and thoughts. I have been buying for the last six months. The big advantage to me is I am getting exposure to lots of different wines that I would otherwise not experience. Plus during normal months the shipping is only $5.00, even if you order 2 or 3 of the same woot. During the summer the charge an extra $2.