Correct Door Jamb Switches

Shop around, pricing is all over the place:

PN DS173T Door Jamb Switch
$5.56 @ amazon.com
$4.90 @ autoplicity.com
$10.99 @ eBay
$5.99 @ summitracing.com
$5.56 @ homedepot.com
$6.99 @ oreillyauto.com
$3.97 @ carid.com
$2.86 @ rockauto.com