I am on the same boat. but instead of a vega you can get the last generation best of the best for under $170! 60+% of performance for under 1/3 of the price.
Yeah, the Vega 64 (like most high end gear) is probably not worth the expense. I had a surplus of money at the time and I do GPU programming research, so I could justify it. I also hear that while it has nice compute performance, it's not as impressive for games.
