eBay actually started a new service not so long ago for this kind of thing. If I'm not mistaken, it's called Secret Guru. I actually tried selling services on eBay before they launched the Secret Guru service but had more luck on micro-sites like Fiverr. However, as mentioned above, any micro-site you use needs to be trusted or people won't buy your services through the site. Freelance websites may also be worth a look, rather than micro-sites. I think you can also offer your services on Skill Pages. There are some micro-sites which allow you to charge more than a fiver.