Absolutely. My folks owned a smallish grocery store when I was growing up with a meat market. We always took home the stuff that had turned dark because most folks wouldn't buy it. I prefer steaks that have aged a bit. Like you said, you can often get it on sale. If there is something on the couter that has naturally aged a bit, ask for a discount. Many butchers will give it.
They sell only select, choice, or prime beef. I wait until 2-3 days after the sale and buy the premo steaks for about half the sale price. They know me by name and make it a point to cut steaks extra thick, just the way I like them.
Nothing better than well aged 20 oz prime sirlion, 1 1/2” thick grilled over a hickory fire.