Ah. Gotcha. Can't say I know a lot about "no-ask" return policies. I will say that I love my Touch enough that I doubt you'd have any reason to return a Glo.
I wish I could justify getting a Glo for myself (I would love the better tech stats and the by-all-accounts really good lighting) but my Touch works great and I just can't do it.
As for returning books that have problems: While Kobo doesn't have the convenience of that Amazon website feature you mentioned, I have had problems with two ebooks purchased from Kobo. Both times Kobo Customer Service were very helpful.