Just Snagged a Micro Seiki DD-35 - Need Help With Affordable Cartridge Options for SM-505

Hi All! Just picked up a decent MS DD-35 for a steal at Goodwill. I know very little about tonearms and cartridges, having only purchased a few for DJing with Technics and Numarks over the years. Was hoping one of my old DJ cartridges would work for testing this bad boy out, but alas, they don't seem to fit. Any advice on an affordable cartridge for this bad boy. Poor millennial, so my budget is tight. Honestly, if I can't afford a cartridge, I'll probably just sell this bad boy. Hopefully it won't come to that.

This model was recommended by others, but dang... $400 is way too much for me.
https://www.ebay.com/p/SIGNET-TK7LCA-Cartridge-and-7lca-Stylus/673171598

Am I S.O.L. (surely out of luck)?

Here's the DD-35:
https://imgur.com/k090Pxu