This might be in jest, but I've seen something close to this. I do a lot of work in C# and a number of years ago I had two different roles approach me to work i

This might be in jest, but I've seen something close to this. I do a lot of work in C# and a number of years ago I had two different roles approach me to work in VB.NET and it was > 10% premium over the C# equivalent market rate - the megacorps struggled to get people to switch so threw money at anyone with a whiff of interest and talent. (I said no in-case your wondering).