。。
Sold copy-books at Comiket 67. They all sold out, so I had them properly bound.
Literal
Comic-Market 67 [at-にて] copy-book sale. Safely sold-out-did [because-ので] bookbinding-did [polite-ました].
にて is the formal/written equivalent of で 'at,' common in announcements and written reports. コピー本 is doujinshi jargon for a self-published book produced with a photocopier rather than offset printing. 完売 'complete sale / sold out' is a compact sinitic compound. 製本 'bookbinding' — having the remaining copies properly bound after the event's run. The first clause is a headline-style fragment with no verb.