Buying a wine that is already aged and thus mature and ready to drink is a quick and easy way to find out if you want to get into the game.

You ask "Is the price reasonable?"  It's $200 for a bottle of wine; of course it's not reasonable!

If you can spend that kind of money without a second thought,  the price you quoted is very fair for this wine in the marketplace.  The 1994 Taylor Fladgate is available in my neighborhood for around US$20 more.

You pay a premium of course because someone else cared for this wine for the last dozen years.  Buying and tasting mature, you will know whether you want to make the next $200 for three bottles of young port that you will tend for a decade or two.

The other advantage to buying it maure.  That next $200, what do you get?  The satisfaction of owning wine for the future and a bill for whatever you will drink to celebrate.