If you want to dress up as a Dalek, you have to go full Dalek and be completely covered in armor. This awesome Dalek costume is the way to go.
This full size Dalek is mostly made of wood with some metal and fiberglass parts. The lenses on top light up, the head rotates and the arms can be moved around. There is even a small wooden seat inside for you to sit in, or you can stand up and walk around.
Etsy seller Darksiderwizard will make your own personal Dalek in any color you want for an extra fee. If you really want it to be authentic, you can even opt for a voice changer inside it. Base cost is $1,006.15(USD). K-9 and TARDIS sold separately.