It’s steep because ML just sources them, adds connectors, their logo, and their margin.
Same specs- https://www.amazon.com/dp/B076W844TC/ref=cm_sw_r_cp_api_i_mGu2EbW5M3T9X
Another option from the amazon.
https://www.amazon.com/LM-YN-Wirewound-Electronic-Industrial/dp/B076W844TC/ref=sr_1_1?crid=1I351PLLF4RVK&dchild=1&keywords=lm+yn+50+watt&qid=1589826346&sprefix=lm+yn%2Caps%2C138&sr=8-1