Giftify's CardCash Reports 14.2% Sell-Side Volume Growth and 18.5% Rise in New Seller Acquisition Through Early Q1 2026, Expanding Platform Supply Base

70,954 sell orders completed January 1 through March 15, up 14.2% year-over-year; 25,508 first-time sellers onboarded in Q1 2026, up 18.5%, as CardCash accelerates marketplace supply ahead of spring demand season