nine times out of ten yes i will because while a cover can be eye catching the synopsis is what's selling me the story.
i mainly say this because from what i've learned and my own personal research, a good synopsis essentially works as a sort of elevator pitch giving the overall gist of a story and maybe hints at certain plot beats but if it's giving away the whole book or comic or whatever then it's kind of not good and may even indicate a worse story inside (not always but i have seen it)
there's also the fact that i think some covers can be misleading where you thing you may be walking into a dramatic fantasy story but actually it's a smutty romance or it looks like a horror thriller but in reality its just some ya drama so where something like that may fall i'm expecting the synopsis to pick up the slack and if both fail i'm probably just not going to check the thing out 🤷