Volume, the transparent checkout startup, has closed a pre-seed round of $2.4m, in an oversubscribed deal led by firstminute Capital and joined by SeedX and Haatch Ventures. Other participants include angels Christian Faes (LendInvest), Russ Carroll (ex-Klarna), as well as angels from MADE.COM, Mastercard, Visa and American Express. Volume improves on current open banking capabilities to reduce the long checkout process, while simultaneously killing hidden fees charged by payment intermediaries.