/cgl/ - Cosplay & EGL

I'd like to 3D print one or two small parts for a prop (I have the files already) but have no idea where even to begin.
I don't want to buy an entire 3D printer but also don't know what my options are for paying for one. Are there shops that will print just one small thing rather than larger-scale product runs? or am I better off looking for a workerspace or local hobbyist to work with?
Is it expensive? I know it's relatively costly but don't know if it's a case where even something that can fit in the palm of my hand will be over $20.