Question about Trinity Psalter versions

[VictorBravo]

I notice on Crown and Covenant's, website, that there are two paperback versions of the Trinity Psalter, one for $8.50 and the other for $5.00.

Has anybody here purchased the $5.00 version, and if so, is it any different from the $8.50 version?

I'm looking to make a bulk purchase, but I can't seem to get info on the difference.

Here are links to the two:

Trinity Psalter (words-only edition)

Trinity Psalter: limited paperback edition

 

[Contra_Mundum]

On the second link, it says

During the past decade, the Trinity Psalter has become one of the most popular psalm-books in the world.
Due to a print overrun, we have a limited number of paperback editions with a special cover.
This is a one time opportunity to get quantities of the Trinity Psalter at a great price!

Looks like the same book, different cover (no true picture of that cover present, so appears to me), one time chance at a low-price giveaway.