I spotted some at Target the other day. I will be furnishing a house at the beach if all goes through to settlement, so the curtains caught my eye. They looked fine but may not be acceptable at close inspection. The price was good. I cannot vouch for BBB blackout curtains, but daughter recently purchased lovely voile curtains from BBB. My SIL has many BBB drapes and curtains and they look and feel great. Have held up well.

Seems like they are everywhere at a discount lately. Zulily.com has a large collection.

PB Kids has them, as well as Land of Nod. I have struggled with needing blackouts in the past & bought some from Land of Nod, but they're not all white. Quality seems good, so I'd check online.

I recently purchased linen- look lined panels fron Target, I am very pleased with them.