The ones listed on GB recently have sold almost immediately at $5k so I would assume you could list for more. For sure some experts on here who can give a more accurate idea.
I did a comparison once of about 6 different brands of 2-3/4" 00 buck shots. The shortest one was a tad shorter than 2-3/4" and the longest one was nearly 3". The one almost 3" was curled with a cardboard stop in the end vs. folded and crimped like most.