We don't see the 'Series Bundle' link on Amazon UK, but there are often (unadvertised) discounts when you buy bundles. I've just spotted a £1.50 discount on the bundle of The Vildecaz Talents series by Chelsea Quinn Yarbro (writing as Camille Gabor):
https://www.amazon.co.uk/s/ref=nb_sb...words=vildecaz
The individual volumes total £8.52, the bundle £7.02. Now if only the Glen Wolfe Solar Cycle had bundle discounts...