Verifying those costs is a bit involved, I'll quote CNN:
'Exact cost projections on all of Sanders' proposals aren't available, in part because he hasn't fully fleshed out some of the ideas he's embraced (such as universal pre-K and child care). But a wide variety of estimates put the likely cost of the single-payer health care plan he has endorsed around $30 trillion or more over the next decade. Depending on the estimates used, including projections from his own campaign, the other elements of the Sanders agenda -- ranging from his "Green New Deal" to the cancellation of all student debt to a guaranteed federal jobs program that has received almost no scrutiny -- could cost about as much, or even more than, the single-payer plan. That would potentially bring his 10-year total for new spending to around $60 trillion, or more.' I've also seen estimates ranging up to 93 Trillion, but that all his policies in total...
And Elizabeth Warren stated that her Medicare-for-All plan would cost just 'under 52 Trillion' over the next decade. That isn't including what she would spend on a Green plan, so her plan could actually beat Bernie's by a lot.