So I got a Turbo Everdrive a few days ago. It's "L'awesome", but it's a timesink packaged in a HuCard form.
I got mine from retrotowers.co.uk. They're a bit more there than at other retailers, £60 which works out to about $95 US. But they have free shipping in the UK (£5 worldwide shipping), and you get a $5 discount for putting in the code "adamk."
I chose to buy from there because they accept Bitcoin (and other cryptocurrencies) and offer a 10% discount if you pay that way. I'm not associated with them, just wanted to let anyone who's looking to pick up a TED or any Everdrive and pay with Bitcoin know.