Those bromos might sell for about the same as the shipping cost if you are lucky. No offense, but they are extremely plentiful an are readily available for a couple of bucks at most antique malls. I personally dug over 50 of them a few weeks back. Bromos will bring more if they are teal in color of have mistakes in the embossing.
I remember a story a few years back in the antique bottle mag where some digger unearthed literally a whole pick-up truck full at one site.