I notice some cards don't have prices for a foil, Glimpse the Unthinkable being one of them, is there a reason?

Because there are none for sale on TCG

Ah, interested to know. Assuming they are pretty rare then, I have one though.

Thanks

That's exactly it, I have that issue with a bunch of my rare foils too. You'd have to go hit ebay or somewhere else for a price if you were willing to trade it.

Zarasiss, I am very interested in that foil, start up a trade and chat if you would like to trade it!