That might be true and if it is it's still £18k spent and only £10k has gone to charity. It's a massively inefficient way of giving to charity. Charities on average have 70% of their income being spent on charitable activities so £8k definitely not being spent on charitable activities just reduces that efficiency to 39%. You can raise money for charity without spending £8k first.But most people wouldn't take the £8k out of the donations, so the charity is still £10k better off in your example.
How it works… | Climb Kilimanjaro For Charity
We've tried to make as much information as possible available on this website, but sometimes it can be nice to have a simple overview of how a typical climb works. We hope you find this information helpful but remember; if you want to climb, we want to help. So if you have any questions whatsoever,
www.climbkilimanjaroforcharity.com
This first link on Google suggests "You can of course pay for the challenge yourself, but most people fundraise to cover their costs and raise money for a good cause."
It would be far more cost effective to raise money for a week in Benidorm than to climb Kili.Also, even £2k is more than I normally raise for charity when I go on holiday.