HT1368: iTunes Store: How to use Wish ListLearn about iTunes Store: How to use Wish List
It's not avilable in the current versions of iTunes, other people have posted about the same thing. You can try leaving feedback for Apple and maybe it'll be added back in a future update : http://www.apple.com/feedback/itunesapp.html
Currently Being ModeratedAug 16, 2013 4:26 AM (in response to davebutlersydney)
I am a fellow user, not Apple, I don't issue credit cards. Apple don't charge anything for a purchase apart from the listed price (and if you are in the US your state's sales tax) - the price is the same whether you buy them individually or if you'd been able to buy them all in one go.