I've got the same problem - or should I say 'had'...
Mine was a 32Gb wifi as well, maybe a bad batch. Your pics are very good - much worse than mine; I think it's a coating under the glass that's uneven; my 'creases' are getting longer. If you feel along the edge, you can sense the undulations. I thought I could live with it; the iPad works great in every other way. Then I saw the TV ad... 'iPad is beautiful..' and I thought those marks are not that beautiful, and I don't want to be cleaning it every 5 seconds, only for the marks to return. I took it back to the Apple store; they had no replacement stock, (ran out yesterday) so I got a refund and am on a reservation list. I may get used to the idea of no iPad and live without it. Maybe try a 3G model if the batch is 32Gb wifi specific. I checked the models in store... at least a dozen, and none had the problem. The staff were good about it; got the refund imediately - then the Genius guys got involved to hurry along the replacement - they were trying to polish out the marks, but were happy it was a dud, having been refunded. 'Marks on screen' was written on the docket for Apple HQ - I would say 'under' was a fairer description. Missing my iPad, but happy I'm free of those marks. Hopefully the replacement wont have any functional issues! Though buying new again, I'll be happy to show my face at the store if it's not 100% pucker. If it had been £200, I might have kept it.
I've posted on the linked post too...