The NASB and NKJV editions of
The MacArthur Study Bible are on sale for $4.99. If you're a fan of the NASB, this edition has much better formatting than anything from Lockman. Also, while the NKJV edition has been cheaper before, $4.99 beats the more recent Thomas Nelson Bible sales ($6.99 and $7.99 are common).
So far, only Christianbook and Amazon have the sale prices, but I expect Kobo and B&N will soon.
NASB:
Christianbook Amazon
NKJV:
Christianbook Amazon
While searching Amazon to get its links, I noticed two more MacArthur books on sale:
The MacArthur Bible Handbook is $4.99.
Christianbook Amazon
Why Believe the Bible? preorder (available 2/24) is $1.59 at Christianbook and $1.99 at Amazon.
Christianbook Amazon
Edit: Why Believe the Bible is $1.99 at
Barnes & Noble as well, where it's not a preorder. An older edition, maybe?
Edit edit: I just bought it from B&N and it includes a "Preface to the 2015 Edition", so I'm guessing that B&N just attached the new edition to the old link even though they aren't supposed to be delivering it for two and a half more months.