Lowe’s has Project Source 1 inch white mini blinds on clearance, save 75%. YMMV!
Project Source 1-in White Vinyl Room Darkening Mini-Blinds (Common: 29-in; Actual: 28.5-in x 64-in) – $2.11
https://www.lowes.com/pd/Project-…in/1017029
Project Source 1-in White Vinyl Room Darkening Mini-Blinds (Common: 34-in; Actual: 33.5-in x 64-in) – $2.49
https://www.lowes.com/pd/Project-…in/1017067
Project Source 1-in White Vinyl Room Darkening Mini-Blinds (Common: 35-in; Actual: 34.5-in x 64-in) – $2.66
https://www.lowes.com/pd/Project-…in/1017093
Project Source 1-in White Vinyl Room Darkening Mini-Blinds (Common: 36-in; Actual: 35.5-in x 64-in) – $2.71
https://www.lowes.com/pd/Project-…in/3686742
Project Source 1-in White Vinyl Room Darkening Mini-Blinds (Common: 39-in; Actual: 38.5-in x 64-in) – $3.19
https://www.lowes.com/pd/Project-…in/1017097
Affordable, sturdy and simple, these blinds are perfect for covering shallow windows and doors. Offers twice the view over standard vinyl mini blinds. Provides the utmost in light control.