My friend Om and his wife Chunna run this shop. They're an amazing team and put so much effort into deciding what to put in their shops. Om has fluent English.
What to buy: I think their best products include crafts from a local woman's group, and the honey that they make themselves, and that you can try for free. There are different flavours depending on what time of year the honey is harvested, I loved the jungle flower and the buckwheat. If you ask nicely he will show you some bee hives out back.
What to pay: Impossible to say but I had a great time and spent about $50 on Christmas presents for my family.
There isn't much in terms of souvenirs to be bought in Chitwan's resorts , but slightly more of interest in Sauraha's backpackers' streets. There are some local crafts and arts stuff here, but rather indistinguishable from that of Thamel og Lake Side. Very little that hints back to Tharu culture.
One unique thing I found, bought and brought home was a small fish trap made from bamboo strips. Tried it at home, but unsuccessfully so far....
Inside the Royal Chitwan National Park area, there are plenty of shops carrying local crafts. They are smaller version of what you'd find in Kathmandu and Pokhara tourist area.
You can find books, t-shirts, rice paper products, animal bone ornaments etc.
Personally, I am a bangle maniac. And Nepal is a great place to buy glass bangles. Most of them come from North India and have a great selection in terms of color and design.
In Chitwan, in market town of Narayanghat area, you can find bangles being sold on a square shaped cart. The mobile bangle shop are found quite often in the market area. There are also some small shops within the market.