How often does this happen at your university (or did happen when you were at university)?
I've got mixed views on it - on one hand the book might well be quite well known and regarded (better still it might be available for free in pdf format on the author's website) in which case great... it has clearly been written with that particular module/course in mind and also used by other universities.
On the other hand when it is part of a module, a bit specialist and costs a hefty sum of money... I'm not so sure when the lecturer then sticks his or her own book as one of the recommended texts.
I've got mixed views on it - on one hand the book might well be quite well known and regarded (better still it might be available for free in pdf format on the author's website) in which case great... it has clearly been written with that particular module/course in mind and also used by other universities.
On the other hand when it is part of a module, a bit specialist and costs a hefty sum of money... I'm not so sure when the lecturer then sticks his or her own book as one of the recommended texts.