The difference could be the type fecal run.The localish livestock vet would charge $28 for a fecal, which isn't awful, but wouldn't take long to add up. On a whim I called up the more local small animal vet where I get heartworm meds for our LGDs and they run goat fecals for $10-15. It's a rural area so I imagine they do get the occasional small livestock. Probably not enough that I'd call them for something complicated, but it seems like running a fecal ought to be pretty straightforward.
Long-term, I'd like to get my own microscope and equipment and learn to do it myself, but good to have an affordable and convenient option in the meantime.