Of course! Proxmark3 is an artifact of RFID, whether you are learning or hacking.
It was designed by Jonathan Westhues and development of open source hardware, the main use of RFID sniffing, read and cloning operations.

Jonathan Westhues personal website:http://cq.cx/
Website:http://proxmark.org/
Sales Website:http://proxmark3.com/

I have a proxmark3, and I think it is very good value!

Some pictures,
Board:
http://i.imgur.com/UDvKg0Y.jpg
HF(High Frequency) Antenna:
http://i.imgur.com/MJt0g3R.jpg
LF(Low Frequency) Antenna:
http://i.imgur.com/rR8alRA.jpg

It is very beautiful, is not it? Enjoy it!