One reason for re-posting some of the better images from Peter Petrick's archive is that they can be displayed at a much larger size than they were ever published - and usually without the 'moire' pattern too. Presumably one reason why they are also selling for large amounts.
The following photo of the Me 163 B V45 'PK+QP' just sold for 80 euros. Here it is having its C-Stoff tank filled. Franks states that this was the first pre-production Me 163 airframe known to have been fitted with the MK 108 cannon. Note the retractable tailwheel fairing. According to Ransom it was re-painted in August 1944 as C1+05 and later went to Brandis for armament trials.