>>282201688
>2012 pricing at mandarake was also lower at 120-400 yen per regular book with some outliers at 600. Nowadays the double is pretty common, 500-800 with outliers at 2k+
Eh, I don't know about that. I'm looking at e-mails from 2013 and it's the same mix of mostly 400 & 600 as the order I put in last month. The C84 stuff here was 600, and most of the C106 stuff I see is still 600. Even today, it's not common to see listings going above that unless there's a reason for it (higher page count, omnibus, popular artist, no mail order). And I've only ever seen 200 yen for stuff that's damaged or old with less demand.
Maybe 2013 is year everything changed. The doujinshi pricing in my order history for the past twelve years have been pretty consistent at manda. I've definitely noticed tanks getting more expensive though.