In general, 21 traps do not get a lot of weird modifications, so they are not quite like the rest of the trap guns out there. If you break the 21 trap guns into original and nicely refinished categories, there is a relatively good selection available to you if you are patient (21s have a fairly high turnover rate). The availability of 32-inchers is quite a bit thinner than the 30 in. bbls.

I would expect to find them in the $6500-7500 range. At auction, reduce this by 20% or so.