I haven't used SciFier in a while. I knew they were going a bit downhill when when they reduced the amount of points you received from purchases and their 10% off everything codes went down to 5%.
Their prices are still good, but they can take ages to despatch orders as they bring in most of their books to order. I'm getting all my manga from Forbidden Planet now, it's a couple quid more, but I've honestly never received a book in bad condition from them. Whereas, I've had some tatty books every now and then from SciFier in the past, that I returned.