* Proxmark III http://www.proxmark.org/ ([GOZ] has one @2018)

• USD$430 https://hackerwarehouse.com/product/proxmark3-kit/

• Cheaper versions on aliexpress.com , https://store.ryscc.com/products/new-proxmark3-kit

* USD$30 BusPirate - contact cards and miscellaneous serial * SmartCards * NFC * RFID * SDR

• rtlsdr

* GNURadio hardware

• USD$299 https://www.crowdsupply.com/lime-micro/limesdr

• AUD$1991 https://www.ettus.com/product/category/USRP-Bus-Series

• bladeRF? hackRF?

* See also MIFARE