If it was worth .01-.03 in the 60’...... it’s not worth $80?
Plus, I’d think it would be an easy thing to test at the track.
If it worked, imo.....it’s worth the $80.
If it doesn’t...... you got hosed.
But I know people who’ve spent way more than $80 for zero gains.
You could always try and dicker on the price...... 2 for $50.