Ramster,
I agree with everything said thus far. You could also add them for sale on
www.sedo.com and
www.afternic.com. If you want to pay for domain appraisals,
www.fastdomainsales.com are respectable (a domain appraisal for those domains would probably not help you though). There are plenty more places which offer appraisals and markets for selling. Put a quick search in for domain auction and domain appraisal.
I'm a platinum member of
www.dnforum.com. If you want me to post an ad in their adult section, just let me know. I've sold a few this way. I could act as domain broker, no charge. Alternatively, you could join yourself. I think platinum membership is 50 bucks.