I'm constantly surprised what domains are still available. I've registered many 2/3-letter domains (with 3-4 letter TLDs) in the past year, as well as ones for very common nouns (some also 3 letters), almost always for under $40. Admittedly it's mostly for the newer TLDs, though.
Similar story. I own a half-dozen relatively recently-registered three-letter domains at two-letter ccTLDs. I’m surprised every time one turns out to be available at normal rates.