I have bought from Triffid Park in person, but that was at the Melbourne Flower and Garden Show where they had a stall. Great customer service. I would use their website more if it was more... functional. As of now you've got to order through email and calculate all the costs yourself. I mean, this isn't the 1990s any more, get PayPal or an eBay shopfront at the very least! There isn't even an 'add to cart' option! And look at the bizarre grouping of hyperlinks at the top of the page! It would take a half-talented HTML programmer a few days to knock up a good web site for them, but they seem happy to leave the site the same way it was when Kurt Cobain died.
Sorry for the rant and the old thread bump, but their website seriously needs some work. Not that they read this.:p
If you're interested in travelling back in time:
http://www.triffidpark.com.au