Radiohead’s In Rainbows reached the “traditional” segment of its marketing plan yesterday, when plain-jane CD copies of the album hit big-box stores, record shops, and other places that happen to sell music. But given that pretty much anyone who wanted to hear (or hear about) the thing has probably gotten it somewhere already, Rainbows‘ first-week sales estimates are currently somewhere in the “it’s anyone’s guess, really” realm. The band’s last album, 2003’s Hail To The Thief, sold 300,000 copies in its first week, and according to the New York Times, approximately 400,000 copies of In Rainbows are being shipped to stores in the US. So while it won’t do Kanye-sized numbers, it could hit the six-figure mark that’s been rarer and rarer for new releases these days (although I’m going to guess that it’ll place at No. 1 unless people decide to get Josh Groban’s Noel as a last-minute Little Christmas gift). But which first-week sales total from the past year will its tallies hew closest to? Our Showcase Showdown-style poll after the jump.

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Uncertain Prospects for Radiohead CD [NYT]