I don't think any real Bitcointalk members buy the service, real members who have been here for a long time won't be easily tempted by a service offered by someone who doesn't have a good reputation contributing to the forum. I trust members who have a good reputation more than doing transactions with members who only rely on positive reviews from accounts that have 1 activity on the forum.
This is bad, although it's up to you for choosing which user to trade, but if there's no one want to use a newbie service, this make the new seller has no way to compete with the veteran seller since the veteran seller will always get customers and the new seller will not get any customer as no one want to order.
There's nothing wrong to trade with a new seller as long as you use escrow service or making an agreement for send first etc.