Sephora foundation samples

Are sephora foundation samples free?! I have really dry acne prone skin and I've been told to try a few different types of foundation and I've never been to sephora so I was just wondering if their foundation samples are free and if I can get more than one sample of different types of foundation or do I just get one sample? I don't want to commit to buying a foundation that's expensive especially if it doesn't work the way I'd like it to.