Three options
Pay $5 per month to post, become a supporter (yearly subscription), Maintain "Active Member" status then its free.
http://arachnoboards.com/threads/important-announcement-read-before-posting.279681/
Goodlukwitthat@ You can choose to pay $5.00 per month to post in classifieds as well. Not a subscription you can buy just one month etc;Well darn.. 99% of the time I'm on, I'm either browsing tarantula chat, reading questions. Guess I'll never be able to post anything for sale or wtb then V_V