I would suggest that if any of the icons give subtle indications that are against Catholic teachings or is potentially spiritually harmful to you, return them. If the items are neutral, then that is up to you. But if they are not, return them and use the returned money to go to another store.
Remember when Peter was spreading the Good News and an oracle followed him saying “Listen to this man, for he speaks a truth” (paraprashed form memory) ? Well Peter turned around and drove the oracle away. The reason is the article “a” instead of “the”. I’m not sure how this would work in the Greek, but I trust the NAB to be accurate. The changing of the article to signify that while this is a truth there are other truths is a subtle sabotage.
If the icons you got can do that, by changing the relationship between us and God or other nefarious ideas, do not use them. I do not doubt a priest’s blessing. The blessing, as far as I know, does not change the image and the image will be what you are looking at physically.