Lower your prices during Bargain Booksy promos

Just two possibly obvious data points, but might be helpful for someone here:

I did two Bargain Booksy promos this year (first time novelist, adventure/thriller).

Same blurb and image, but promo #1, in May, ran at $4.99, and promo #2, in August, ran at $0.99.

I sold twenty times more copies with promo 2.