Julia
I found it's not worth the money. At all. Go for the free membership and take nothing that comes from there seriously.
I found that a lot of scammers contacted me from ProZ and I got more trouble from them than help. Another thing I found to be a turn off is that when other members found I was talking a certain language, they contacted me, making nice with me over the phone, finding out how much I charge, what are my clients, only to find out that they were doing that to find out what kind of competition I am for "them". When I would contact them to ask advice, or to just say hi, they ghosted me. Overall, ProZ lured me in(joining a facebook group required a ProZ membership), but once I was in, I didn't gain anything out of it, except I paid them money, or except "a taking" on their part happened. There was no community- but just folks trying to find out about you, what you do so they can discredit you on some level.