Nepenthes boschiana is a lovely dark-pitchered species from Borneo. For sale here is a form which originates in the Meratus Mountains in South Kalimantan. This is a small seed-grown specimen.
I've found N. boschiana to be a very vigorous plant in highland and intermediate conditions. It's an easy grower and is also known to be a great hybrid parent. For more cultivation advice, see my Nepenthes Growing Guide.
The first two photos show the exact plant you'll receive, which is about 8cm in diameter and will be sent potted. Postage costs £6 via first class signed-for delivery in the UK, and is free for orders over £60.