Average wage in say Albania, is about £800 a month - a third of here.
The women tend not to work at all if there are kids. So you have to compare the figure they get, to one man's pay.
It makes it pretty attractive for someone, with a family, to have a go at getting a better life in the UK, or failing that, go back as you were but with 4x the average salary in your pocket all in one go.
Pay in Afghanistan can ordinarily be around £300 a month. A £10k handout for a single, is a frikkin fortune.
For a single young bloke 10k is 3 years' pay. Very attractive for a shot if you can't get a job, wouldn't you say?