Walmart offers the Mainstays Room Darkening Solid Woven Panel Pair in a selection of styles and colors (60x95" Red pictured) with prices starting from $6.84. Opt for in-store pickup to avoid the $5.99 shipping charge. That's around $10 less than what you'd pay for these kind of curtains elsewhere (depending on size). They're available in 60x54", 60x63", 60x84", and 60x95" across select colors.
These practical products make everyday life a little easier.