They have been running them 'out of town' MP3Sparks was once AllOfMP3. TVBoxSet was formerly DVD-Series.
Based out of:
Strawinskylaan, Amsterdam 1143 XX
From they're own FAQ:
"Is my order SECURE?
You bet! When placing an order, Dvd-series.com uses..."
It would appear someone forgot to update the page when they "moved"!