I drove up first thing this morning and picked up 20 chairs. They are used, but in very good shape. Some have minor tears on the fabric, others look like they have never been used. The majority of them are being kept in a warehouse, so you say how many you want, and they bring them down for you. I was not too particular, since I was pressed for time, and just took the 20 that they brought for me. I think they are very comfortable, but obviously have not put them to the test. They supposedly all came from the Park Plaza in Boston.
One thing to note is that they do not stack like some stackables where the legs rest exactly on top of the legs below. They stack a little further to the front of the cushion. Not sure if this makes sense, but the result is that when stacked, they take up more space from Front to Back, and ultimately cannot stack as high. This may have an impact on how you store them, or how you transport them.
Also of note, If you pay cash, you get an additional 10% off the order, and of course in NH no sales tax. All said and done, I think $270 for 20 of these chairs is an amazing deal. I would be tempted to grab more if I am heading North. I need to determine How many I am going to keep, so may have 10 for sale soon. He said that they were expecting someone today who was going to take 600 of them.