RETONWhiteboard Dry Erase Markers with Eraser Cap, Rewritable Magnetic White Board Markers Pens, 50 Pcs, Black

The seller, reton, gave me the asin# b07hvtc5tm to purchase larger quantities (like 1200 at a time), but that asin does not work. any help?

"30 pcs, without magnetic" can i select this in only black (or only another dark color)?

are these low odor?

Do you have from those without the eraser in the cap? I need a replacement for a marker that came with a book and it needs to be shorter than 4 inch.