Quality prefabs are hard to come by at a reasonable price, and the lower cost models only fit 2 or 3 chickens. What's your budget, and how much free time do you have to put it together?
I recommend using a dog kennel (what I use for my chickens).
This is one from Home Depot is good and only needs a few modifications: hardware cloth around the bottom and bird netting over the top, and then you can make a roosting area and laying area pretty cheaply with some plywood and 2x4s
https://www.homedepot.com/p/America...-ft-Chain-Link-Kennel-Kit-308595AKC/203856112
It shipped in 5 business days, which is reasonable. It's a pretty hardy kennel, too