Spiderman I keep seeing at ~$100. I keep looking for one, but won't pay that.
Cap hovers around 45-$60. I consider myself lucky for getting mine at $30 shipped. You might want to ebay that one towards the end of April (close to when the Avengers movie hits) hoping for peek demand.
Sunset Riders I had sold for 60 euro about 4 months ago.
Seeing them do a little bit under or over that price in Europe. So kidpanda was pretty much spot on imo.