domain first timer your views

[gasy2you]

hi, well this is my first time buying and selling domains, i have done my research for a while and decided to take a minimal plunge by buying 3 domains they are:
retailerinvestment.com - this one has already had some traffic
mouth.be - is this worth much?
thepokerway.com

any advice on where to sell and what to price at and to do when selling would be really helpful.

thanks alot