$50-$100 per day from answering simple surveys sounds too good to be true for me. Don't take me wrong, it's such kind of promises that raise a suspicion of something being fishy. I am working online for few tears now and have come across many such tall promises that are too lucrative but eventually turn out to be a scam.
I am not sure why you didn't share the name of the site with few more details like their minimum payout, their frequency of sending survey invitations etc. Also, one important point regarding survey sites would be the location. Tier 1 countries are most favoured by most of the surveys and residents of these countries make decent amount answering surveys. But very few survey sites work fur tier 2 and 3 countries, and the compensation os not great. I joined quite a number of survey sites in the beginning with all these reviews and promises of making good money, but nothing worked. I am sticking to just three that work for my location and I don't earn a fortune there. But just some extra pennies.
I wish you had given some clarity about the site in your post. That would have been informative and helpful for users here to make a decision. The first answer that comes looking at such promises is YES especially for the new comers. With the experience they realise that all that glitters is not gold.