Buying shower door from Amazon is definitely a reasonable thing to consider. Except the huge collection of Amazon shower doors, it is convenient for you to sit at the comfort of your home, go one door at a time, and finally place the order.
Amazon is a big brand and they want to stand behind what is sold through them. That is a good thing for the customers, as opposed to any generic guys trying to sell something.
You need to be aware that, the shower door that you purchase from Amazon, they may not be directly selling to you. There are shower door vendors, who sell through Amazon.
You need to be bit aware of the shower door you are going to purchase and the seller. As with any other item, once you have seen the features you have seen, you need to check for the customer feedback for sure. In the frameless shower door reviews, I have included only the doors with better ratings. Then you need to look in to the seller ratings. If the seller has done many sales and got a good rating, that is a good sign.
On the flip side, the new sellers try the best to make their name. They may even sell for less to beat the competition. So you need to make that decision.
In case of shower doors, you need to prioritize the main features that you are focusing. for example, a tub door is very much different than a shower door. Doors may have similar name. But if you end up ordering a tub door instead of shower door, then you are left dealing with your mistake.
Another one is to check how much out of plumb adjustable the door is. There might be other features like this you want to prioritize.
You have made the decision, go ahead any place the order. You will be given when you can expect the shipment.
Once you get the shipment, open the package and make sure that everything is intact and there is no breakage or scratches. Amazon sellers do a good job is properly packing their shipment. However, in case anything is wrong, you can open a conversation with them through Amazon itself. They are usually very genuine.
To conclude, I would re-emphasis you making all the effort from your side to make sure you are ordering the right shower door. This is a heavy stuff and returning it is not very fun, especially it it is due to your mistake. Amazon stands behind their brand and that is something you can count on.
You have the luxury to browse through a huge collection of shower doors, without driving ship to shop. See shower door collections in Amazon.