Design from a crowd is a mess.
Infringe copyrights
Steal work
Unoriginal
Unprofessional
Incorrect formats
Incorrect options
If you think your company is worth a 100 squid then go for it.
Steve Jobs paid 100k for the Next logo for his computer company. He hired a top designer in Paul Rand. Jobs asked for a few options and if he liked one of them he'd pay. Rand told him, "no, I'll design you 1 logo for 100k, you'll pay that fee whether you use it or not"
And that's the way it should be.
It's a load of codswallop getting something crowdsourced. Most designs are copies of other designs and only offer 1 option, where a designer who is paid to produce a brand provides many options, 1 colour, reversed out, full colour, 2 colour, 3 colour, version for embroidery, etc.
No design crowd site offers anything comprhenisible as a real designer can offer, which is original ideas, with all the correct versions in all the correct formats, ai eps pdf psd jpg png gif and whatever else in required.
Heck there might need to be a need for a spine mark.
Design crowds are a load of nonsense. If you use them - you'll most likely face a lawsuit shortly afterwards.
NO!SPEC