You will be buying reptiles, housing them in the petstore's displays, paying for their upkeep, and doing all their cage cleaning and maintenance with no wage. The shopkeeper gets 30% of all reptile sale $, plus the shopkeeper gets to keep 100% of all reptile supplies sales.
You will have to proceed with caution. Questions to find out the answers to:
1. Who is responsible for the cost of a reptile if it dies? You? The store? The person at fault for the condition that killed it?
2. Who is responsible for the cost of a reptile if it escapes and is lost?
3. Who is responsible for the cost of a reptile if it dies/gets sick in the buyer's care? What guarantees will be offered and who will cover them?
4. What happens if the petstore gets robbed/flooded/set on fire and the reptiles are lost through one of these means?
5. A customer is handling a columbian redtail in the store when it bites him. The customer sues for trauma. Who takes legal responsibility?
6. One of the shop's other employees is doing something in the reptile section when you're not present. Through accident, they cause harm to one of the reptiles. What happens?
7. One of the reptiles gets loose and gets into the rodent cages... who eats the cost of the mice?
8. A customer buys a snake and returns it after a day or two spent in his collection. It comes back to the store covered in mites and infects the other reptiles. Who is responsible?
9. The store has legal/fiscal problems unrelated to reptile animal sales. How much of that are you protected from?
... and so on.
If you get satisfactory answers to all of the above, and any other similar questions that you can think of, then here's some business related questions you ought to consider. You don't want to be optimistic when answering these questions, but rather as practical as possible. If the petstore has historical data on sales, that will be a big help in determining what you can expect...
1. How much should you sell the animals for? You need to make a profit and so does the store. OTOH, if you price too high, no one will buy, and you'll be stuck with an increasing feed bill.
2. How many animals of each kind should you stock? And what times of year should you stock them? Sales records from the shop should have the information you'd want here. You don't want to overstock something, since you're footing the feed bill.
3. Do you have any options on restricting animal sales? If someone walks in and you know that person's killed the last three snakes he bought, can you refuse to sell him a fourth?
4. Given the prices and rough expectations for animal sales, will you make enough money for this to be a worthwhile enterprise? --OR-- If no, will it still be a worthwhile learning experience to you?
5. If Something Happens (TM) and you need to quit or get out of this arrangement for health/family/financial reasons, what are your options?
...etc....
-Kat
-----
"You keep WHAT in your freezer?"
"Mice. And rats. If that bothers you, I can call them 'cows' instead."