I agree 100%. We have been working with Tony over at EZ Merchant Solutions for over 5 years. We started way back on version 2 when we only had 1 website. We now have 5+ sites on cs cart. We have purchased many of his addons, but he is our go-to guy whenever it comes to any cs-cart custom modification or question. 

We've tried other "overseas" developers and details get lost in translation and you have to wait 24 hours for a response. Tony is US based and in the same Pacific Time zone as us, so he is always responsive. I emailed him yesterday morning to develop an api for a third party addon(Yotpo) and by the afternoon he had already completed it. He stands behind his code and wouldn't hesitate to recommend his services in a heartbeat.

We are having an issue with this mod. We are running the latest version of cs cart, 4.6.2. The tax and shipping options are not updating when a customer changes state or country. Say for example, customer is in CA and should be charged tax. When they select the state, it does not update to show them they are being charged tax. Also, if a customer changes the country, the shipping options are not updated. 

Anyone else have this error?