sakrete high heat mortar

[JACK]

Has anyone tried Sakrete high heat mortar for hearth and dome?
It is in stock at my local Lowe's for $ 58.00 for 50 lbs.

Features:

• For applications up to 2550° F (1399° C)
• Air entrained for freeze-thaw resistance
• Underlayment or wear surface
• One hour working time
• Non water soluble
• Great workability and high strength

After all the looking for fire clay for home brew mix, this could be a dream come true at just over half the price of heat stop and found just five miles away.

Jack