ALL buyers should KNOW what they're purchasing and or ask questions prior. If seller tells false info that's just wrong.
Most people are aware sales men/women have a job to do. Hence most check out cars prior to purchase, regardless of what the sales person says.
Red ears are actually very easy to look after imo. Just not the most practical pets for the average Jo.
uv, basking bulb, good filter, huge tank/pond, variety of food. not a lot more to it.