Also, a lot of people want direct delivery to their storage from wineries and stores. So you might ask if they want to be notified on delivery arrival and if they want the delivery checked. Those services will be extra, but if you bought futures and they come several years later, you want to be sure that all the bottles are there, not leaking, etc.

And temperature is critical. The cooling and backup cooling system are concerns, as is the ability of the recieving dock to notify you if the wine is actually warm when it arrives. I wouldn't want a delivery from an unrefrigerated truck in August.

And handling charges are important. Do you want to be able to get a bottle(s) a month or year for no charge, or will you be happy to pay a fee every time you take out a bottle. And if you want deliveries, what kind of advance notice and what kind of fee will you be willing to pay?

But geography is most important in your survey and you didn't ask about it.

In NYC, where I live, people will pay for every service because if you don't have a car, traveling around or out of the city for a bottle is a waste of your day. Somewhere like Indianapolis, it is a different story - you tend to be driving anyway. So you should tailor your questions to the site you are considering, or ask people to ID where they are answering from because the responses will be meaningless if they address questions that are of no concern in your area.

That means in Chicago and NYC, having a doorman take delivery for you might be important, but in places without high rises, that will not be an issue.

Anyway, best of luck. My storage facility shut down last summer, and I think there's a market in places like NYC and Chicago.