I have been considering buying another tortoise for my son. The Sulcata I have is my daughters and he wants one of his own. There is a Russian tortoise on my local Craigslist. I sent an email to the poster asking a few q's about the tort. The person said it was a male, approx 5 years old, 4 1/2" long and in good health. Does this sound right? The reason they stated they were rehoming him was because he is aggresive to their female. They are asking $40. Is that a reasonable price? Are they easy to care for?