Excalibur Epic Collection is being released by Marvel in March, 496 pages in total. Forbidden Planet International have it at a pre-order price of £24.11 (+£1.00 p&p), Amazon have it at £33.50, the rrp is £35.99.
Here's the blurb from Forbidden Planets website...
A legendary team is born! Meet the United Kingdom’s champion, Captain Britain, and his paramour, the metamorphic Meggan! They’ll band together with former X-Men Nightcrawler and Kitty Pryde when Gatecrasher and her Technet are sent to capture Rachel “Phoenix” Summers!
From their lighthouse base, the heroes of Excalibur will tackle the ferocious Warwolves, the unstoppable Juggernaut and Mojo mayhem! Things get wild with Arcade, the Crazy Gang and the X-Babies — and really heat up as Excalibur is drawn across the Atlantic to an Inferno raging in New York! And don’t forget Lightning Squad, the alternate Nazi versions of Excalibur!
Plus: Who or what is Widget? Collecting Captain Britain (1976) #1-2; Excalibur (1988) issues #1 to 11, Special Edition and Mojo Mayhem; and material from Marvel Comics Presents (1988) #31 through 38, and Mighty World Of Marvel (1983) #7 and #14 to 15.
Volume #1 in the Excalibur Epic Collections, featuring cover artwork by Alan Davis.
Marvel, paperback, 496 pages, published March 2017
Here's the link to pre-order...