What is a good site to use for cheap advertising?

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I'm really interested in finding a good site where I can advertise for at a low price. I just found a really good site a couple of days ago, the cost is only 1.00 for advertising. The only thing is it's a new site so it will take a little time for it to get out there and be seen. I have been getting a good amount of referrals since than but I'd really like to find more sites that don't charge too much. Can you let me know what sites have worked for you? I do purchase advertising on alot of gpt sites but sometimes you never know with those. Respond with no links please but you can send me a privage message with the links. Don't want to be deleted nor does anyone else responding to this discussion. Thanks for your help:)