This shipping charge represents an informed estimate from the individual vendor(s) supplying materials for this project.
If the estimate is lower than what we end up paying for shipping, DonorsChoose.org pays for the difference. If the estimate is higher, we use the savings to fund additional classroom project materials.
In short, any savings go to students.
DonorsChoose purchases the materials for teachers. We only charge sales taxes for projects in certain states where we do not have a sales tax exemption.