it is not my favorite table but its not a bad table, it is really just about play characteristics...if the table is in really good condition, 500 is not bad...I wouldn't pay more than that for a Blond no matter what kind of condition but I have played a number of pourly kept Blonds so I don't like them and wouldn't buy one
however, that doesn't mean you got a bad table, its still a coin op and if you clean it and make sure it is up to play quality, you have a table that will last your entire life if you want it to and you can learn everything you need to...the adjust ment from the Blond to Grey or Fridge is no more difficult than Brown Mrbl to T3000 or Cherry to Brwn or Grey...they each have a little character of their own but all are close enough to each other to make moving from one to the other no big thing
when you can post pictures, take a bunch all sides, close ups and so forth and let us take a look...what kind of condition is it in? any issues?
either way, congratulations and welcome to the tournament table club