I had a $12 coupon from Tower Hobbies. So with shipping of $1.99 + $27.99 - 12.00 = $17.98 shipped.
At $27.99 probably not a great "buy" as that could go towards a brushless motor. I have had Sport Tuned motors before, and they definitely do make a Tamiya model go faster. I believe this is rated at 21000 RPM. So we will see how it propels my Tamiya AMG GT TT02 touring car. I'm a victim of nostalgia.