Monoprice speaker wire is the alternative you seek. Cheap, OFC and on Amazon. This should do most people's needs. Lower the guage if you need a longer run.

https://www.amazon.com/Monoprice-Choice-Gauge-Conductor-Speaker/dp/B003L1AFC8/ref=mp_s_a_1_13?crid=1KAMO03KXM5MV&keywords=monoprice+speaker+wire&qid=1674441861&sprefix=monoprice+soe%2Caps%2C199&sr=8-13