We recently purchased the 4 person barrel sauna thru Costco. The kit arrives on a pallet which contains a number of boxes which contain the slats, heater, etc. as well as the front and rear walls which are partially assembled. It took me and a neighbor approximately five hours to assemble. we also used a nail gun as the instructions suggested to save time and make assembly easier (HIGHLY RECOMMEND). A few of the staves had some minor warpage and splintering, but the kit includes extra so that wasn’t a big deal. The instructions for assembly are pretty clear, but if you have any questions (I had a couple) their customer service is EXCELLENT. So far so good, we love it! It heats up quickly and we’ve had it up to 200 degrees. We also purchased the rain jacket to help prevent any leakage. For the money, it was a great investment. The cedar smells great and its extremely comfortable especially if it’s only two people at a time so you can stretch out on the benches (I’m 6’3″). I recommend checking the bands after a few days for adjustment due to settling.