Another suggestion and a story to share.
He is so busy juggling countless orders and the communication that goes with them, always include as much information in you can in your e-mail when contacting him. In my signature, I always include my IPCT screen name, my Aliexpress handle, my Paypal e-mail that I use for these transactions, and the order/invoice I'm referring to.....always. That doesn't even work sometimes.
Two weeks ago I ordered a new Starlight recessed PTZ dome. These are ~$600 cameras. He had to order it from Dahua, so it would take about 3 days before he could ship it. In that time, I decided it wasn't the correct solution for my install, and asked to change it to the IP66 rated PTZ speed dome. Graciously, even after ordering it for me, he allowed me to change my order, (he would keep the recessed dome for himself). In my experience, he won't invoice you until he gets it in from Dahua. In addition, I ordered the full 4 piece corner mount solution from him.
He sends me an invoice for $190! I could have just paid it and got my $650 worth of goodies, but that's not me. I'm not too religious, but I do believe in karma. I want a healthy relationship going forward with Andy. I wouldn't want someone taking advantage of me, my company and a simple mistake. I have a sign business. I've done that in the past and ate the difference. This connection and supplier all seems too good to be true, and can come to an end any time, especially with DT and his rhetoric on China.
I explained to him that I never paid for the original order. As you would expect, he was stunned and very appreciative I brought this to his attention. Within minutes, I received the new invoice. He throws in the mounting solution for free ($46 from B&H), and my new discounted camera & mounts are on the way.
I look forward to many more orders from Andy. These security camera setups are snowballing in my town. Everyone of my family & friends I show the NVR/cam setup to wants me to install one for them. I'm up to three additional homes on my street, and there are only 7 of us total. The others just haven't seen it yet!
SD