Just downloaded it. No problems downloading individual tracks once you are set up. I don't use it very often, in fact I haven't used it since I downloaded Hayley's iTunes live album last year. I eas able to download this individual track, and I expect it will be changed against my credit card. It is as simple as that.
In the US there is no subscription fee and I assume it is the same elsewhere. When I setup my account I gave them a credit card number and whenever I download something they charge the card exactly the amount for that download.
Does that help? Bill
Yes, thanks Bill.
If it's the same in the UK, I may as well subscribe.
There used to be a minimum amount for credit card transactions, hopefully that has changed, even in the UK.
That is the case with most legitimate online downloads. Unlike high street shops, there is no minimum spend cap for using credit/debit cards. That is one of the reason why I use iTunes so much - there is the convenience of being able to buy and download individual songs, although it is cheaper to buy the entire album when you compare the full album price to the individual song prices.