I agree, in some ways, that this price -doesn't look 'cheap' in today's market - and today's .mobi circumstance.
But, that's not how I'm measuring this purchase.
(i) This name is a central name/term, in a central, global, market segment - ie Property....The word 'Apartment' is as relevant in the US, as it is in Europe, as it is in Taiwan, or Istanbul. Its a globally used term for this segment (whereas, say, 'Condominium', or, 'Condo', or 'Flat', is much more localised to, say, the US, or UK market, and therefore more limited).
(ii) I see great ROI/profit value-applications for this name...Both as a stand-alone developed site - or, as a future end user sale (there are any number of major end users in the global Property market that will see HUGE value in owning a true generic for their industry, like 'Apartment'. One day this could be a monster re-sale).
(iii) All the metrics are right for this name:
Domain: Apartment.mobi
Frequency (Google) - 227,000,000
PPC Ads # - 58
Max PPC Bid - $2.31
MAX PPC Income/day - $311.83
Overture/mo - 1,739,412
Wordtracker/day - 1,223 (37,913/mo)
..ie Get a site with this name/natural traffic potential up the Rankings - and, the prospects of real value are much better than 70%-30%, imo.
(iv)The name lends itself well to 'on-the-go', imo...As the habit of mobile phone information reliance becomes ubiquitous (as I believe it will), then a mobile 'Yellow Pages' site with available Apartment listings for sale, or rent in your area + maps + prices + brief descriptions + showing times etc etc, that you can view anytime, anywhere (and move quickly to secure) makes sense.
(v) The only other thing is whether - in the mobile context - .mobi will have traction 'out there', in the future.....For me, that's essentially only a branding & awareness issue....And, that can be fixed, because .mobi-designed sites work, and are convenient (no scrolling, fast loads etc), and this competitive advantage will become obvious as awareness spreads, imo.
So....With all that going for this name, I feel $6000 is a fair investment risk, for a likely very high return, over time.
That's my thinking on it.
.