This time around I got the price that they quoted and they accepted every book. The quote for some of the books was not very much considering I pay on average £3.50 for a 2nd hand book, however I always choose those with free postage and postage for a book is a minimum £2.95 from royal mail. So with Ziffit offering free return postage, importantly recycling any books they reject, (I now ensure not to buy any ex library books as Ziffit won't accept them) and paying me something for the ones they accept and benefiting others it is worth it. I was paid promtly this time so am Happy.