I bought a knock off pair of wireless buds from Amazon for $22 this week and couldn't be happier. Bluetooth 5.0, 3.5 hour battery life with case that brings it up to 15 hours.

I know the Samsung buds will be better but for $22 I have no complaints. I was considering doing the Samsung trade in deal just for the free buds (I'm perfectly content with my S9). No longer.

Edit: These are the buds I bought, I don't make money off the link, just a cut and paste from Amazon for anyone interested: https://www.amazon.com/dp/B07HK8F3PM/ref=cm_sw_r_cp_apa_i_TfsCCbB3J27HE

I use these. Affordable, work reasonably well and have held up for over a year. Definitely not the best sound quality but if you are looking for something cheap, they serve me well

https://www.amazon.com/gp/aw/d/B07HK8F3PM?psc=1&ref=ppx_pop_mob_b_asin_title