I do not believe they have printed any to sell in the US for several years. It can be quite pricey on ebay, but they will likely have the best selection.
There are sheet sets and curtains you can sometimes find at Walmart but I think the sheets are very hard and they have the oversized, distorted figures.
The vintage sheets are usually very soft but often very faded. Be careful if you are looking at these on ebay as I bought several that said they were not faded and they were so badly faded you could hardly make out the pictures.
Pottery barn has a recent bedroom set including sheets and curtains but they are very pricey, too.
Best of luck to you in finding some. Hopefully, someone on the board will have some they are willing to sell at a reasonable price.
If you don't mind using panels, this is actually a great price:
http://cgi.ebay.com/ws/eBayISAPI.dll...2#ht_500wt_927
I am in no way affiliated with this seller, I just saw the listing. $14.99 with Buy it Now plus about $5 shipping = good price on the lot in my opinion. (I hope it is ok to post the link here.)