At $750 it is no great bargain, but it looks right and considering what fools are paying for "rc's" you could do a lot worse... bcd/43 has to be one of the most common 98k available, right up there with byf/44 and dot/44, I have owned more bcd/43's than any other maker-date and they can be found quite nice.
As for bcd barrels, they are elusive, but I can't imagine a premium being paid due to one. Although made 1941-1944, they are not usually seen on regular production until quite late in 1943. Most are found on commercial builds and it is probably not a coincidence that they start showing up around the time Gustloff started to use slave labor beyond construction (one of the biggest fallacies about slave labor is that it was used for arms production early on), while SDP and Gustloff (Weimar) used slave labor early on, it was largely for construction, not arms production. This changed later in the war, though most make more of it than they should, - largely because of ridiculous books like the Buchenwald Report and other holocaust related books. Like their friends in the climate change "profession", these alarmists have an agenda and they do not tolerate dissent well, mostly because their livelihood is tied to their "conclusions".