Looks like a columbian tegu in the picture though it is hard to tell being so small a shot. They wholesale for $10-15 and tend to be on the more flighty/aggressive side compared to the argentines - though this could have more to do with there being no breeders for CBB so they're ALL imported/farmed babies. Also, columbians are 100% carnivorous, you can offer fruits and veggies and they'll generally stare at you like you're crazy.