Please tell me what is the cost to join air table once the 13 day trial is over. I have a project I want to advertise, fundraiser for one tree planted…org but will not be ready for another 30-60 days. Please advise. And will need advice on sweatcoin. If I advertise on sweatcoin, does that mean I have to accept sweatcoin as payment for my products on my website, or can I just accept US dollars.