I bought a 29" jet potato from www.muirskate.com and talked with Scott Lembach.
There is presently one 29" jet potato available on their website ready to ship! So if you want to get hold of one and want it delivered quick grab it before it goes.
Price is $65.95USD
Here’s the link: Jet potato 29"
Comment if you buy it so the topic can be closed.
Cheers!