In one sentence, describe what the following article is about:

Tortoises come in many varieties, and there are many factors to consider when it comes to choosing one, from the way you want your tortoise to look, the environment your tortoise prefers, and how much money you want to "shell out" on this shelled creature. Any type of tortoise you choose will make a wonderful pet for your family, once you commit to caring for this particular species. Some of the more common species of tortoises include the Sulcata, Leopard, Redfoot, Yellowfoot, Greek, Russian, Hermanns, and Indian Star. Here are some things you need to know about choosing a tortoise: Though the tortoise you bring home may be small and cute initially, some species of tortoises can grow over two feet in length after 5-10 years of care. If you're really committed to having one for a long time, try not to get caught in their appearance, and consider what species best suit your lifestyle, financial income, surroundings and whether or not you're able to provide the required care of that specific species. It's important to purchase your tortoise from a seller that you respect, who has a history of making a successful sale and who can promise that you have been given the tortoise under healthy conditions. Avoid getting your creature at a reptile show, because this may make it likely that you won't be able to get in touch with the seller again after buying a tortoise, so there's no way he or she can check up on how you're caring for your tortoise.  Find a seller who prides themself in customer service, whether you are going to a pet store or finding your creature online. If your seller says that he or she will be easy to contact after the sale is made, then it's more likely that you are making a solid transaction. There are some legal restrictions on keeping or breeding some tortoises, especially Mediterranean breeds. If this is the case for the tortoise you want, then make sure the seller has a certificate from C.I.T.E.S. (Convention on International Trade in Endangered Species). If you're only around to take care of your tortoise for a year or two before you want to jump ship, then it may not be the ideal pet for you. Tortoises can live between 30~100 years, which means that your lovely pet may live longer than you. Don't let this scare you, though; just make sure you get a pet tortoise when you live in a stable environment and know you can find someone to take care of your tortoise if you have to move or leave. You don't have to be settled in one place for 50 years, but you should be prepared for many years of care for the new addition to your home.

Summary:
Choose your tortoise. Buy your tortoise from a reputable seller. Make sure you can make a long commitment to your tortoise.