Hi again gentlesavage,
My income comes from many different domain extension including .co.in & .in but also .net, .org & .co.uk and of late some of my .com.au domains.
So it is spread all over the place but I have sold some of my domains and I do get decent PPC money from sites I have built out that will make a few dollars a day from ads.
Yes the renewals have to be paid but it is all part of the long term plan.
In regards to what "astalavista" said in his post above.
Well I disagree! To say a .com domain is better than a .co.in or .in or any other extension for that matter especially a ccTLD you will have to be much more specific with you details on why and what type of .com domain are you comparing to a .in etc
Lets take one of my domains to use as an example. waterpurifiers.in
Now I agree to have the .com in any domain that is the premium generic for your subject can be a great thing BUT and this is a big BUT! Most people do not have the money to own that one or two word .com. If the target market is local as in India then the .in has more authority and trust in that market than a .com does and this will only get stronger over time. In Australia the .com.au is KING and in the United Kingdom the .co.uk is KING (or Queen for them really) same for Germany's .de etc etc
Now India is still a developing nation and granted it has a fair way to go but once it locks on to its ccTLD, look out as it will be something else IMHO.
So what I am saying is give me waterpurifiers.in over bestwaterpurifiersetc.com any day of the week. My site is sitting at a healthy position 8 on Google India's SERPs but that is not just because it is a .in name, I could probably do just as well with a .biz
The value to the end user (especially if their market is mainly India) is in owning the generic domain for their product or service. It is no different to the same principals that exist in the .com space. If I had waterpurifiers.com it would be a very different strategy as I would have to try and make it fit a global market place not just India which is why I love .co.in & .in, it is a targeted market and a very large one at that.
I have some half decent .com domains that do ok with parking & ppc but I have much better results from my .net's & .org's
Some examples are sdcamcorders.com, onlinevirtualworlds.com, coatingpans.com, leddownlights.com and travelbytrain.net, atticladders.net, electricalswitches.net, seacontainers.net, adslrouters.org, safetygear.org, swimmingpoolcovers.org
All of the .net & .org domains make more money than the .coms because the subject matter has more searches and they get rankings in the SERPs. Now If I had the .com equivalents of my .net & org names I am more than certain they would make much more money but I don't have the capital to buy those names and am happy to have the ones I have got.
The key is the owning the generic phrase no matter what the TLD or ccTLD if you stick with those then they will AlWAYS have a higher value than a made up domain like bestatticladdersetc.com and will be much easier to sell to an end user.
Cheers
Ed