Guinness World Records 2017 edition (Star Wars special) only £4.99 delivered with Amazon Prime.
WHS and Tesco are selling this at £10 but some online retailers have it for around £6.99
Amazon is the cheapest I could find and it had good reviews.
Book depository has it for the same price with free postage if you don't have prime but haven't used them before so unsure what they are like?
Hope this helps someone out ☺️