For a large item like this, better to buy direct from the seller versus Amazon. At one point I tried selling my own products on Amazon and realized just how expensive it is to do it. Amazon takes close to a 20% cut from every third party seller. It's why American made products (like my own) can't afford to sell on Amazon while all of the cheap Chinese goods sell so we'll. They have the volume and it's cheaper for them to ship from China than it is to ship state to state in the US. Yup... It's all backwards.
All that said, when you see a big ticket item on Amazon, especially if it is American made, try calling the manufacturer and try to purchase direct. They often times are happy to help you since it's another 20% in their pocket instead of Bezos pocket.