I've seen them show up in cases of 9 or 12 at HomeGoods. Don't remember how much it cost but it was definitely cheaper than individual bottles. Granted, I don't think most people will need that many dosing containers lol
They had a sparkling variety with black caps instead of grey. Looks pretty sleek.
Also for a clean look you can use steel wool to take the print off the bottle. It doesn't scratch the glass and takes the print off real easy