I did too. The only one in that pack that you're paying above RRP for is the Heirloom, and I've already tried that one a few times and I reckon it's worth it (even if it's been seen cheaper).
How far forward are you looking to trying that First Growth? I found a Tyson Stelzer review of this vintage on Dan Murphy's website (96 points) in which he quoth, "Such is its wall of tannin that it must not, under any circumstances, be approached shy of twenty years in the cellar."
Interestingly there is a rating of just 88 points from Jeremy Oliver in his guide on the NAB website that was posted the other day. (Yes he marks hard, but he's apparently preferred five of the six other vintages he's reviewed since 2000, so apparently not its finest year in his view.) Dug up the text of the review on the Cracka website: https://www.crackawines.com.au/product/2008-parker-coonawarra-estate-terra-rossa-first-growth - apparently he doesn't like the finish: "rather dried out and lacking freshness, with herbal undertones".
94 points from Nick Stock; he doesn't make any big deal of the tannins and describes the finish as "classic Coonawarra": http://www.goodfood.com.au/drinks/2008-parker-coonawarra-estate-first-growth-20121128-2af8u.html
And of course, 95 from Halliday.
For $20 it's certainly a punt I'll take. Surely it can't be the dud in the pack! and nothing else in there is a dud either.