My experience of ordering a shed from Wayfair was universally bad.
The price was on the high side, but I had to wait 3 months for delivery. Communication with the company about the delivery date was worse than useless. They seem to outsource this, so when you e-mail them you (eventually!) get a reply which is just coped & pasted from somewhere and does not address the question you asked.
In my case, the shed was delivered without proper confirmation of the date or the promised tracking number by a different courier to the one Wayfair told me would be handling this. The first I knew about this was a call while I was at work saying 'I'm at your house with a shed.'
I also felt the quality of the product was mediocre at best. Many of the screws through the outer cladding of the shed have missed the batten they are meant to go into. Not terminal, but poor workmanship and indicative of zero quality control.
I raised these issued with Wayfair through out, but they have basically told me to f-off.
Whatever you want to buy from Wayfair will be available somewhere else, and I will certainly only be using them as a last resort form now on. My advice to anyone else would be to do the same.