watch straps

I've combed the internet and every shop I can and have not been able to find a non-leather watch strap in size 12mm. Does anyone know where I could get one? My watch has been ticking for over a year since my leather strap finally broke! Thank you!

First things first, let me tell you what I mean by reasonable. Something around 15-20 USD. So, I found a few brands that sell PU leather straps and some that claim that their Lorica leather is as durable and aesthetically pleasing as the real deal. However, I haven't been able to find anyone...