Flotations don't always separate the eggs. For larger eggs like roundworms, hookworms, whipworms, the flotation works. But for some types like tapeworm eggs, coccidia, giardia(which is what you see most in snakes and reptiles), you want to do a direct smear or a centrifuge. Tapeworm sections are heavy and will normally sink anyway, and you also have to break them up to see the eggs.

If someone doesn't have $1,000 or more to blow, then a $20 fecal at the vet will do. I do ALOT of fecals, but I would rather take it to the vet or do it myself at the facility(we have a lab down here I can use). Even sending it off to the lab(which is only around $30 or less) would be cheaper than buying all of the equipment if you're only going to do one or two fecals a year.