Even Namecheap is the best domain registrar (in my opinion) the marketplace is not very popular (like Godaddy marketplace for example)
I think is better for you to listed these domains on Sedo & Flippa.
It will increase your chances to get a good deal.
Thank you for suggestion, i am aware of that, but i like the simplicity of namecheap market, process is automatic and fees are reasonable
![Tongue](https://bitcointalk.org/Smileys/default/tongue.gif)
I tried both Sedo and Flippa, but they are probably better for high end domains imo
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)