You can expect to earn $2-$5 for most of the surveys in general. For some special surveys you can earn up to $50 per survey but those are rare. Harris Poll also conducts paid focus group studies where you can earn $50-$100 per study. Usually these focus group studies are 1-2 hours long where you interact with other participants under a supervision of a focus group moderator.
One Poll is a company that was founded in the United Kingdom, but it’s also open to consumers in the United States and beyond. It claims to be recognized by Money Saving Expert, one of the largest consumer websites in that country, which is a reassuring recommendation. What I recognized about it is that the surveys are short and easy to complete, so ideal if you’ve had a hard day and don’t want to do anything too taxing. New surveys are added on a daily basis, and some are amusingly quirky.