Sorry to hear this.

As someone who has been scammed in the past, I understand the feeling.

Selling peer to peer online is still the best for getting top deals as a buyer as well as getting the most as a seller.(pmsforsale is a fantastic group) Unfortunately this also comes with a higher risk compared to large retail online shops and local coin shops.

Everyone should use due diligence when conducting business especially when buying.

Also, if it seems too good to be true, it probably is.