Thanks for the report, and sorry for the long delay in responding.
I'm told that the wallpaper package description explained, at the time, that it was just a test application for the payment service and that any payment would be treated as a donation. When the test period finished, the test application was removed from the USC catalog altogether, which is why it doesn't show up now.
I have tested in 11.10 beta 1 that purchased items do show up in the "Previous Purchases" screen, even when they aren't yet installable on the current Ubuntu version.
Thanks for the report, and sorry for the long delay in responding.
I'm told that the wallpaper package description explained, at the time, that it was just a test application for the payment service and that any payment would be treated as a donation. When the test period finished, the test application was removed from the USC catalog altogether, which is why it doesn't show up now.
I have tested in 11.10 beta 1 that purchased items do show up in the "Previous Purchases" screen, even when they aren't yet installable on the current Ubuntu version.