I asked the question because I bought the new Peter Robinson Paperback and he has changed from Pan to Hodder. Everywhere ( but not Waterstones) I look I see his Pan Paperbacks discounted to about £1.99. The Works, Tesco, Woolworth etc.
Is this just Pan getting rid of a backlog of books or reprinting and making the most of the copy right?
Most in-store discounts (at least here) are based on the stores rather than the publisher. Places like Tesco and Costco and Walmart sometimes get a better price right out of the gate, from the distributor, based on volume orders. If Peter has a new book out, it's probably just a way of moving stock and hoping to capitalize on any buzz around the new book, but this is how I understand things work on this side of the pond, and there are always exceptions to every rule.