Walmart offers the
Scotch 5" x 9.25" Bubble Mailer 25-Pack for
$2.84. Choose in-store
pickup to avoid the $5.99 shipping fee. (With orders of $25 or more,
Amazon charges the same with free shipping, although it won't ship for at least a month.) That's $13 under the lowest price we could find for this quantity of similar Scotch mailers elsewhere.