Wahoo Kickr Snap question: Thru Axle adapter!

I just bought a used Wahoo Kickr Snap, which didn’t come with the through axel adapter. I’d like to use my disc bikes on this trainer, which have through axel’s (Wife’s tarmac, my venge).
I see Wahoo sells them for $80! Do I need theirs, or are there cheaper options for this adapter that would work just as well?

Amazon Through Axle Adapters: $44
https://www.amazon.com/Kinetic-Traxle-12mm-Thru-Thread/dp/B00FJGWYDQ/ref=sr_1_5?keywords=trainer+thru+axle+adapter&qid=1562618672&s=gateway&sr=8-5

Wahoo’s own Through Axle Adapter: $80
https://www.wahoofitness.com/devices/bike-trainers/kickr-snap-142-adapter?utm_campaign=PLA&utm_medium=cpc&utm_source=google&gclid=EAIaIQobChMI8PKTvJem4wIVCq_ICh1AGQ5BEAQYASABEgKfhfD_BwE

Looks like Wahoo’s is so expensive b/c they are giving you 3 axles. Guessing b/c you have 2 SBC bikes that you have the same length & pitch of thread.

You can avoid this by going the Kurt Kinetic route, pre-selecting your thread pitch, and just buying one (I have one if you want it, I switched over to rollers).

Look at KK site for a good infographic on how to measure: https://www.kurtkinetic.com/thru-axles

I bought that set from Wahoo and thought it was a ripoff.

To use it, you have to install a different cup on the trainer, so if you have a bike with through axles, and one with QR (like me, haha!!) it’s a PITA to switch. I sold it on eBay.

I went with a Robert Axle Project axle. Beautifully made. Fast shipping.

https://robertaxleproject.com/