I am sure I already now the asnwer but I need someone with first hand knowledge to tell me why the AMD parts are so much more than Goodmark? They are both made overseas correct?

I only have experience with AMD, not Goodmark. All I can tell you is that there parts are fantastic with no issues on my end what so ever. The quality, fit and finish are excellent!

There are countless threads on these boards as well as others on this subject and to answer your question, thicker metal,crisp lines,OEM or better fit,if you ever hold AMD part in your hands, you won't want to use anything else and that has nothing to do with me being AMD distributor, because I sell Goodmark parts as well

You get what you pay for. I put Good mark rear quarter panels on a Challenger i'm doing,and I pressed on the panel with my palm to align it woth the outer wheel house,and it dented. That wont happen with an AMD panel. They are not flimsy like the Goodmark ones are. I put an AMD panel on my 70 Charger,it's thicker,heavier,and the lines are crisp. When the Charger rear quarter panels came on the market,there was a thread on Moparts,about which company made the best panels,and there was a guy that did an excellent comparison of the panels. HE weighed an NOS one,and it weighed 30 pounds,the then weighed the new panel fron Classic Body Designs,and it weighed 29 pounds,then he weighed the AMD panel,and it weighed 40 pounds. AMDs panels are thicker than NOS/OEM panels,and weigh an astounding 10 pounds more!