I had a similar experience whereby I sold out of the 10 ebooks I was giving away in matter of hours. (querysharkbait.com)
Sometimes, it is just matter of hours when it makes wanted the part. (suvtrend.com)
I'm not talking about the average (and tedious) 60 - hour Japanese role - playing game (JRPG) or anything that's a simple matter of hours devoted. (gamecritics.com)