Ladyone;
My current wardrobe is probably 80% from Nordstrom, but 90% purchased online even though I have two Nordstrom stores that are somewhat convenient to me. I make my returns (80% return rate?) at the stores. Most of what I've bought was 40% off, but some was 30% off, and a few items were 25% off, and a rare few were full price purchased on double point days. I'm not exactly an upscale buyer! I sold a SA that I wasn't interested in a particular $138 vest (gilet) unless it went on sale, and she told me she would contact me when it did. The next time I saw her and told her that online it was marked down to $55, she said that when she was off one weekend, they were taken away to be sold at the Rack and had never gone on sale in store. Believe it or not, I actually found that vest in the Rack last week (at $55) and would have never thought to look there had she not told me.
Nordstrom is the single place where I feel that I've always been treated well. I don't think I've been treated poorly at Macys, but the SAs are nearly non-existent. I think I've been treated fairly well at Talbots. The issue I think I'm facing is ageism; I don't fit the demographic of many stores even if the clothes might fit. Maybe they think I will chase away their desired customers? The one place I will no longer enter is Sephora, at least a particular one in the 'burbs. I went there shortly after it opened and was the only customer in the store. Nonetheless, the SAs purposely avoided me like the plague even after I chased one down. She couldn't wait to escape me.
Nordstrom.com has a Plus Size tab, just as it has a Petite tab. It will give you a good sense of what is in the brick'n'mortar stores, maybe even a more complete selection, although the stores sometimes have additional colors. Or not. I have also found that what is marked down online will not necessarily be marked down in the store, but they will give you the lower price if you ask.