first, basic distinction between liquidity and potential.
in the current auction aftermarket the floor price for 3 Letters is around 15K. It might sell for more than that depending on the various commercial uses and frequency of these letters. (since it has the letter v in it excludes it from...
cafe .com was reportedly sold for 300K in 2006 (and I think that reflecs current value as well), applying the (admittedly crude) 5% rule for .net you'd be looking at $15K end user. probably mid 4-fig wholesale.