When I bought them a month ago they were only around $25. Looks like they jacked up the price. Probably get one for cheaper now off the rak website.
Nelawya Outdoor LoRa Gateway 915MHz Antenna 4.5dBi Omni Directional Fiberglass N Type Male LoRawan Antenna for RAK Nebra Bobcat Helium Hotspot HNT Mining Miner https://www.amazon.com/dp/B09F6CJWHK/ref=cm_sw_r_apan_glt_fabc_GQQ2Y7QFS1DJ88Z0TM1H?_encoding=UTF8&psc=1