I have just confirmed with A GM that trading Retail Gold for Classic is allowed

[Hayduck-kirtonos]

This topic has been brought up many times in the past, it was almost answered in an AMA. Question #8

The answer wasn’t really definitive so make of it what you will.

Q&A Compilation -- WoW Classic Development Team AMA

Earlier today, the WoW Classic Development Team gathered to answer many highly-upvoted questions on /r/classicwow. Here is a compilation of the questions and answers, with links to each. From AltruisWoW, Executive Producer: Q: What exactly are the pop caps for a layer? And extrapolating from that, what are the server pop thresholds roughly indicating (what makes a server low vs medium vs high?) A: We’re not releasing specific numbers, that will likely change dramatically. Based on the respons…