Yep, prices did go up on the Classic series at some point. They also went up on the "standard" USA series, I think for the first time in a long while. The price difference on the fours ranges from $685 to $845. Here's what I got from the site.The prices went up on those awhile back too didn't they? Limited color choices was to keep the cost down so now it just seems like there's a bunch of crossover with the standard line. They are only $300 cheaper although the only difference I can find is in the cheaper tuners.
44-64: Classic: $2750 USA Series: $3435
44-60: Classic: $2770 USA Series: $3615
44-94: Classic: $2930 USA Series: $3615
4 String Basses - Lakland Bass Guitars
Differences are the tuners, a lack of birdseye on the maple board, and two pickguard choices. I think that's all.