Target offers a Biotrue Contact Solution Sample for free when you fill out a short form. That's tied with our June mention as the best such freebie we've seen for this product.
Also available is the Fab Finds sample bundle, which contains Advil, Advil PM, BIC Soleil, and Caltrate, for free when you fill out another short form and answer a series of questions. (Your answers will determine whether you qualify.) That's the first mention of this bundle we've seen and the best price we could find.