What a set of barrels that must be. I just looked at the weights of five 34" barrels all 1 1/2 or 2 frame. The heaviest being 4-9 which comes in some 9 ounces under these 3 frame 5-2 barrels. 34" D grades come along from time to time being uncommon at best and not rare IMO. However the 3 frame 12 gauge guns rarely come to market with 34" barrels, there's your value. Unfortunately this one has numerous issues affecting the value. I would think Dean would be close IMO, at top end if anything. Of course that is assuming the barrels have no issues (MWT, lengthened chambers, dents, etc.), that would be a deal killer. There's a seat for every butt as they say and there may be folks willing to pay more for this gun with it being a 3 frame. Even at that it's not going much over Deans guesstimate IMO. If your friend used 6K for insurance purposes he should be adequately insured I would think and if over insured it would be a trivial cost in terms of premium. Great configuration, if it had condition I would stalk your friend