Regarding a seller

Hello! I recently purchased a Marcus Aurelius coin from Numismática Prados on Vcoins for my dad. This is my first ancient coin and have never been a part of this community. I've found conflicting information on this seller, so I come here to ask about your experiences with him! The more information I look up, the bigger my questions get. The price seems reasonably low ($70 usd) in comparison to other similar coins being sold online. Should I take it to a professional for authentication once I get it? I wouldn't want to gift my dad a replica. What´s your experience with this particular seller?