It is not $80 if you play them.
Instead of 34 to 1 on your original $1 chips,
You are getting 34 to 1 on a $5 chip.
Looks like a $170 return on a chip you paid $1 for.
Kind of puts the odds on the game a little out of kilter.
Multiply x 5, if you can get them in at $25.

Cashing them in at a higher denomination is not as big a problem as playing them.

I have no idea if anyone has actually been arrested for walking with roulettes, but I have seen people bounced from casinos pretty hard for trying it.
Casinos have a "very" large fear of cheating.