Converting a 150-dollar Google Play gift card to cash is an option that some people may consider. However, it's important to note that such conversions may not always be straightforward or legal.

In many cases, the official channels do not support directly converting gift cards to cash. Google Play gift cards are designed to be used for purchasing apps, games, movies, music, and other digital content on the Google Play platform. Any attempt to bypass these intended uses through unauthorized means could violate the terms and conditions.
There are various third-party services or individuals who claim to offer gift card to cash conversion. But dealing with them comes with risks. These services might be unregulated and could potentially be scams. They may take your gift card details and not provide the promised cash in return, or they could even use your information for malicious purposes. It's advisable to be extremely cautious and avoid engaging in such activities to protect your personal and financial security.