We got most of our blinds from lowes for the new house last year. Picked out on levelor site and using sample book at lowes, ordered via lowes desk. Shop the sales and it's hard to beat the prices. Shipped direct from levelor to us. Color wasn't what we expected on one (fabric strip didn't exactly match color in the Lowes book). Levelor re-made the blind, shipped it express, and let us keep the old one.
(We still have the old one...if you can use a 2" white blind 64.5" wide and 60" high (iirc, I need to check), I'll make you a deal.)
Be careful, some sizes have a tremendous price jump. At our old house, one blind, if it was a half-inch shorter, would have been a couple hundred cheaper. Found it somewhere else without the price jump (iirc it was like 90.5" wide). At lowes, that crossed into "special order" territory.
We ordered one roman shade from selectblinds.com. Ordered fabric/color samples first, and they came with a 45% off coupon. Only complaint about them, is after they had our email, the spam was relentless. I just directed it to a subfolder so I could see how long it went on, and for several weeks it was like 1 email every half hour. Tapered off to one a day for a few months, then none. This was AFTER I'd made an order. You'd think they'd figure I had bought what I needed and was done.
Most of the windows on the front and front sides of the house (under the porches) we used plantation shutters. Got them from The Shutter Production
Custom Shutter Manufacturer They are made a lot nicer and fit better than the ones at lowes/etc. I.E. inset into window frame vs. overlay frame one fits all at lowes.