It costed around a dollar. I don't know if that's gas efficient because I'm still a beginner in this domain, started exploring web3 just a month ago. What I did

It costed around a dollar. I don't know if that's gas efficient because I'm still a beginner in this domain, started exploring web3 just a month ago. What I did to make it gas efficient was to upload image/video files to Pinata as soon as the user attaches them and then later when the user posts them, the generated hash gets sent to the blockchain node. And talking about saved posts being paid for in Pinata I haven't really thought about it since I myself used the pinata free tier for this. And noted down that nature of Ethereum, will verify it and update the details later. Thanks for pointing it out.