Filtrete 2-Pack Electrostatic Pleated Air Filters as low as $11.92 with MIR, or even better with coupon

Filtrete 2-Pack is on sale for $16.97, and get extra %15 off when you buy two of 2-Pack.
There is also a $5 MIR from 3M: http://multimedia.3m.com/mws/medi…17-pdf.pdf
And you can also discount even more by lowes coupon.
https://www.lowes.com/pl/Air-filt…m=filtrete