You can use platforms with designers. You can just tell them what you want,(write the brief),, decide what budget you have and then you will get results for example, you can get it here or see how it works: www.designcontest.com/logo-design/ Good luck
designcontest.com site seems to have a $275 minimum.
you can use freelancer.com and set your own price, get something decent for a small project for a much cheaper rate. sometimes you get lucky on a cheap contest and a good designer does something awesome for you, then you can keep in contact with that designer.
I've done the fivver thing a couple of times and have been for the most part very pleased. My only gripe is if I wanted the .psd file I had to usually pay another $15-20 for it so it's not really a $5 logo anymore. Still for $20-25 if you want the .psd it's not that bad considering some places would be well over that.
yeah, my thing is that you can pay $20-$50 on freelancer contests and get 20-50 different logos, pick the one you want, and you get the images/psd/everything. you just get a lot of options by doing a contest rather than one or two samples and you're stuck. plus it's fun to see all the contestants submit their idea of what would look good. sometimes you get a few good ones and actually have a hard time deciding!
some places start at nearly $300 for a logo, which is fine if you're a bigger business, but when you're just starting out, something simple always works fine.