Decided I wasn't buying enough on eBay plus to justify the membership. Went to cancel and was offered $30 voucher. Might stick around for that.
Under 'My eBay Plus' go to 'edit membership' and cancel. Follow the prompts and you should get a $30 voucher.
Your mileage may vary but it seemed worth the post. Might not work on young accounts, I've been on it for almost a year.
edit: Some people are getting long commitment dates for the voucher. Mine was a month but young accounts can be asked to commit for up to six months. This is better for older accounts with some tenure.
Still on the fence, just looked at items I purchased past 6 months and I don't think many were eBay plus. Plus they've torn me a new one with sellers fees over the past six months so maybe not :P
You'd think if they were trying to retain members, they'd try and sell us on the benefits! Who do they think we are? A bunch of coupon grabbing, cash backing, catch SIMing forum posters?!