You can spend US$5 pretty easily on one very good tripod (but something enough for this kind of production $2K would be fine). For a decent mirrorless camera you're looking at $3K body only, so then you have to think about lenses, B cameras, rigging, lighting, etc. which all adds up. Good audio equipment is expensive too, so I think for the size of the channel here, $20K is a pretty moderate spend.