Where can one buy a lateral thigh trainer?

It seems you're looking for a specific piece of exercise equipment, but the term "lateral thigh trainer" isn't a standard one. There are many different ways to work your lateral (outer) thighs, so I'm not sure what kind of equipment you're picturing.

To help you, could you please clarify what you're looking for?

Here are some possibilities to consider:

* Do you mean a machine? If so, are you looking for something at a gym or something you can purchase for home use?

* Are you looking for resistance bands? These are very popular for lateral thigh exercises.

* Are you thinking of specialized equipment like a hip abductor machine? These can be found at some gyms.

* Perhaps you're looking for a particular brand or model?

Please provide more information about your needs, and I'll be able to provide you with more relevant answers and potential sources to purchase equipment.