Very cool, I had some issues around sales tax for my Shopify store where the rates were wrong and I didn't know which states I needed to pay. I signed up and because I had a lot of orders it took 20 minutes but just like magic it told me everywhere I needed to collect tax. I was collecting in some states I should and not collecting in some I should have. I liked that I didn't have to pay to see this. I was going to just file and try and fix it on my own to save some money but ultimately didn't because sales tax is a PITA, so I ended up paying $1300 for 26 states. They didn't charge for implementation or fixing the places I shouldn't have collected for. They had a few cool features like their taxgpt that helped me understand why I shouldn't have collected in some states.