gutenberg's dank pressing co. gutenberg's 3x6 inch tough nylon micron bags 25-50 packs | tea filter bags | all micron sizes (25-pack, 25 micron (u)) is up for auction in Industrial & Scientific. The current bid is $1.00, 95% below the $21.99 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.