Walmart offers the Fiskars SureCut 12" Deluxe Paper Trimmer, model no. 01-005249, for $17.36. (Amazon charges the same with free shipping for Prime members.) Opt for in-store pickup to dodge the $5.99 shipping charge. That's the lowest price we could find by $9. It features a SureCut wire cut-line, TripleTrack blade system, 15" self-leveling swing-out arm, 1/16" gridlines, and smudge guard.

Update: The Walmart item is not available; however, Amazon still offers it for $17.36 with free shipping for Prime members.