I would think ~$1800 would be a fair price on a set of 28” bbls. Because 26” barrels are not in favor today and thus, not as desirable, I would hope to pay a few to several hundred less than that.
Here’s one set of a few other 12ga. 26” Repro barrels that are currently listed on GI, this set has an ask of $1800, but has wording within the listing to make an offer:
https://www.gunsinternational.com/gu...n_id=102850769