That particular listing is $45k in this month's Controller. The nearest Микоян parts are sold out of a location in Prescott, AZ. There's a type club in Reno for L-29/L-39s, and it's possible to get parts through a chain there, but MiGs were mass-produced for third world tinpot dictatorship acquisition, with a ready supply of back-compatible parts. There's a reason it was/is the most popular fighter in the world, and that reason is a lot like why Honda is a popular bike.

Either way, it's academic, mainly because you're not getting a jet trainer, I only want to get rated for one and neither of us can afford the fuel besides.

Once you're in the cockpit, all it matters is the performance. I would rather fly a MIG-21 than an F-4. But, of course, if I had enough money I would prefer to fly a SU-27 or an F-16, so that I could have the performance and the looks ;-)