There was a 2400sf house, a bunk house with 10 rooms, an air strip and lots of rattle snakes in this area.

I have a customer who had a sump pump line clogged with iron and sediment , rented the 100 ft snake and tried to clean it out .

It  was buried like a snake in the grass among other deeds of trust and only referenced by the parcel number on one of them.  

Sometimes a snake in the grass is hard to see!   

 $500 sounds a bit steep.I have used small drain snakes in my properties, but never had a situation where drains would flood other fixtures.  

A vent line could be plugged and you many need to get on the roof and snake it from there.

No wild animals are permitted – such as birds (except those that are caged), chinchillas, ferrets, fish (in tanks 20 gallons or more without adequate insurance naming CMG Leasing as additional insured), iguanas, monkeys, pot-bellied pigs, rabbits, raccoons, rodents of any kind, skunks, snakes or reptiles of any kind, tarantulas, scorpions or spiders of any kind, weasels. .

It makes rodding or snaking the line more difficult also if you get a clog. 

I love his explanation, but I won't steal his thunder. :)I closed a deal in November with a $10k wholesale fee.  

If you're a heart surgeon making $600,000 a year, you probably have a lot of money to invest but no time to snake a toilet.