Gurney's Seed & Nursery offers a Gurney's Premium Blueberry Plant (2-Pack) for free plus $3.99 for shipping.
From Gurney's: "One of our favorite blueberries! Medium-size, blue-purple berries have a crisp texture that improves with refrigeration. Sweet enough that you don't even need to add sugar! Ideal for home gardens, this blueberry has no significant pest or disease problems and is very hardy. Shrubs grow 4-6 ft. with glossy green foliage that turns red in the fall."
You can also enter your e-mail on the page to get $25 off any order of $50 or more.
Note that this plant can't be shipped to AE, AK, CA, GA, GU, HI, MI, OR, PR, or WA.