If you're referring to Pinguicula Grandiflora
then chances are this time of year it would actually be better to buy them bare-root. P. Grandiflora
form a hibernacula (a tight bulb) during winter so you wouldn't need to worry as much as you would for other plants.
Cold temperate pinguicula that form hibernacula have a habit of reproducing via propagatable buds (aka. gammae), these buds have no roots and can be planted and left to burst into life in the spring. I remember repotting my P. Grandiflora
and noticing that the adult plant, while a hibernacula, had no roots either.
It's up to you, but personally I've never had any problems with bareroot pinguicula (except warm temperate species, they really don't seem to like it), especially hibernacula. If you aren't talking about P. Grandiflora
then disregard everything I just said