Guild Wars 2

Hy,

I’ve come back from around a year hiatus 2weeks ago, and after finally cleaning up on all my alts I found I got 7 of these boosters.
I was wondering if they can only be destroyed, or is there some way to change them for some other boosters like what happened with magic find gear pieces where I could get new stats on them.

There’s never been any option to exchange glory boosters. If you bought them with gems, you can request a refund (open a support ticket). Otherwise just junk them. Or keep them for nostalgia’s sake, it’s up to you