OK, I'll try my best for you.
So lets take this domain from the UK perspective (it really doesn't have a Global impact)
The Brits tend to view the .org and .org.uk extensions as Information or help-sites. This includes Charities or not-for-profit-sites. They tend to look upon Org sites that are clearly commercial rather despairingly. That doesn't mean you can't get away with it. But it generally isn't worth the effort. Sure Arty or College student type developments are almost expected to be on the .Org.
Now lets take a look at your 'UKonline' term. Well it's in the right order and correct grammar But, and it's a big BUT. a UK audience is going to expect either a Statistical analysis type of site or as we have in the UK a Social-tariff information site. The social tariffs that many UK broadband services provide are quite popular with benefit claimants' etc. The Absolute Downside to their apparent generosity (usually just a £5 discount against their basic offering) Is you have to pass the same stringent credit-checks as a normal contract. - Not many clear that hurdle.
So from me I would give it Zero value as a resale domain. But it could make for a development that you could incorporate ads on etc. The .com and net are just redirects, so nothing happening there. Yes, I've seen the asking prices. but that's fairly irrelevant
And if you decide to keep it MAKE SURE YOU REGISTER the .ORG.UK as a pair . It's available and will cost you just over a dollar/ a UK pound at 123-reg.co.uk for the first year.. The Brits tend to go to the .org.uk. The .org is seen as more a global extension, Which of course it is.
So could you sell it for a profit - undeveloped, absolutely NOT. developed- yes quite possibly if it was generating some income