Snatched one( mid 70's) from craigslist for $150 a couple months ago. I don't anticipate acros getting any cheaper. Between my canopus 6.5x14 aluminum and the acro I'm all set on AI snares, until the next one.
Try acetone or lacquer thinner. On the whole cymbal. I have removed several logos. You will have a "ghost" logo however, until a patina develops. Resale value isn't super high with A customs anyways. Acetone/thinner, polish the whole cymbal and wash the polish off.