The movie ended up being it's own weird cult hit, but the original Thunderbolts did pretty well for its self: 75 issues of the original run from 1997 to 2003. And even after that they'd try to use the name for weird shit with some of the originals showing up from time to time.

Really, its biggest claim to fame is completely changing the course of some of the side characters. Songbird was a nobody, a fucking sidekick to a schmuck villain. Now she's a sort of C-Lister hero who's been allowed to hang onto her massive character development. Same with the original Beetle, now Mach-Whatever.