This pair is very very decent, especially if the main goal is to block out the sun. $50.
MoGo Travel v1.b. black/blue https://www.amazon.com/dp/B075717WFM/ref=cm_sw_r_cp_apa_i_-X3-AbW3DP2TX
MoGo Travel v1.b. black/blue https://www.amazon.com/dp/B075717WFM/ref=cm_sw_r_cp_apa_i_-X3-AbW3DP2TX