What are these vouchers?

I see alot of posts about exam vouchers, are they legit? and cheaper than paying straight through Pearson etc.

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All of the places I've used have been legit. Saved as much as 50%.

Thanks Stryder! Where do i find these vouchers?

Buyer beware... just like eBay and Craigslist... you never know who to trust.

Whats the details?