Some CGS prices are way over for UNC / BU grade.
However some prices on the pennies are way to low especially coppers.
I would buy some at there prices everyday
Recently i paid £60 for a copper penny .
Sent it for slabbing and they gave a value of £15 even though they hadnt slabbed another one and problem free.
Its a scarce one and think they just guessed at the price.
Would be happy to buy a few for £15 each