Lowe's offers the Allen + Roth 2.5" Faux Wood Horizontal Blinds, model no. 952640125, for $13.97. Opt for in-store pickup to avoid the $79 truck delivery fee. That's $40 off list and the lowest price we could find. They feature a 2.5" slat width and measure 51.5"x 64". Deal ends November 25.
Note, the price will vary by zip code.