These guys provided and installed a shower door for me. I researched the type of door I needed / wanted at Home Depot and Lowes and then called them. They came out within 24 hours with glass samples and a catalog of options. I needed a door that opened from one side. They were great about explaining what option would work best and why, then took measurements and provided a quote within 24 hours.
When I called to authorize the job they ordered the door, needing possibly 5 days. It came in in 3 and they were out to install it at my convenience within 48 hours. They did an AWESOME job and it looks great, works great and my Mom is SO happy! BTW, all this for less than I would have paid for just the door at the above mentioned vendors!