There seems to be a rise in fraudulent sellers on this and other online forums lately.
If you receive an email that looks like it's from Cinematography.com, make sure the web links in the email are exactly Cinematography.com, not something similar. Scammers can make a web site that looks just like Cinematography.com but is a fake. If you log in to their fake forum, they'll have your real forum login and can hack your account here.
Here's a fake PM email sent from a hacked SteadicamForum.com account:
If you are tricked into clicking the link the scammer will steal your forum login, change your forum password and email address, and impersonate you in the forum. They will use your account to send out fake login emails to other forum members and try to hack their accounts too.
If you are considering buying from a forum member, please please please do some research and make sure they are who they say they are before you send anyone funds, even if they are a long-time forum member
Any legitimate seller or buyer will be happy to provide you with real information. Scammers typically just try to make the sale quickly without answering any complicated questions. Don't rush it.
Call the person on the phone and talk in detail about the item and transaction details. Make sure they know what they're talking about.
Use a payment method that includes fraud protection. Don't use PayPal's "Gift" option which does not offer any protection.
It would be smart to change your forum password often.