Was attempting to sell a domain name on an auction website when I was contacted by a buyer who wanted to use Bitcoin to purchase the domain. He suggested https://www.titanicons.com due their "Secure Deal" feature. I was wary, but the site looked relatively reputable. After signing up and going through the deal, I was surprised when 0.052 BTC (The sale price) was deposited into my account without any delay. Subsequently I released the domain to the buyer with the email: cheapmail22@protonmail.com

Upon recipt of the funds, I attempted to withdraw them only to recieve an error message telling me the only way to withdraw funds was through a "verified address" with verification being a prior deposit of 0.018 BTC (apparently). However, I was not told that this was the minimum deposit amount required to "unlock" the funds. As such, I made a subsequent deposit of 0.0108 BTC ($500 USD is the minimum deposit) which was the last of my liquid funds. The funds deposited successfully, however now I have ~$3000 of currency I am unable to withdraw and support is being extremely unhelpful.

Beware of this site.