Hi Arslan (heheh), I like Sellz.net it looks good on paper. You know as well as the next wannabe Domainer that .net traditionally is reserved for the 'Networking' of the topic. That is not to say you are not allowed to make a living of a .net.
Practical Applications for this name would include creating a 'Network' of Sellz, who woulda thunk-it. You get the idea. Actual end user value is sparse, hence the .net instead of .com.
$150 to $500
Nokta says $96
Regards.matt