Polk Audio 255C-RT in-Wall Centre Speaker - $185 US ($261 AU) Delivered @ Amazon US ($219 AU Using Amazon Prime Trial)

This is the cheapest it has ever been.

For those looking for an affordable (but quality) In Wall/Ceiling Centre Speaker this one might be for you.

I haven't signed up to Amazon Prime, but from what I can understand this should apply when selecting Amazon Global Standard Shipping. Can someone please confirm.

The speaker sells in Australia for ~ $450-$500.

Details

• Vanishing Series in-wall center channel speaker, built-in speakers feature our exclusive wafer-thin Sheer-Grille, a magnetically-secured grille that protrudes only 7mm from its surroundings, have the centerpiece of a world-class stealth home theatre

• In-Wall:Mount clearance required for mounting Dogs (add to each side of cutout)3.375 inch (8.57 cm).Dual band pass bass ports are highly efficient in small enclosures, and smoothly funnels the angled woofer's low frequencies down around the driver array

• Compatible with Polk Audio RTi speakers, recommended Amplifier power per channel 10 to 150 watts
  Easy one-cut, drop-in installation puts built-in audio within reach, with Perfect Fit templates, a precision flange; achieve secure, vibration-free efficiency with a simple turn of the patented Rotating Cam system

• Dimension(inches):7.625 h x 13.125 w. Total Frequency Response is 30 Hz to 27,000 Hz

Dynamic Balance®

Patented Polk Audio technology and construction techniques produce powerful, deep bass performance, especially when you need it most.

Power Port®

Patented bass venting design smoothly transitions air flow, eliminating turbulence and distortion, for deeper, more efficient bass impact.

Sheer-Grille™

Vanishing® Series built-in speakers feature Polk's exclusive wafer-thin Sheer-Grille™, a magnetically-secured grille that protrudes only 7mm from its surroundings. Sheer-Grilles have nearly transparent, ultra-small perfs, and are acoustically inert, for dynamic, unimpeded sound and more uniform coverage, even in larger rooms.

Reflective Room Compensation

Reflective surfaces in rooms can make sound brighter and cause image distortion. Engaging the Vanishing reflective room compensation feature lowers the tweeter level to compensate for reflective surfaces. Vanishing reflective room compensation is a custom audio control that cuts the level only in the 4-5kHz range, exactly where reflectivity destroys sound quality.

Distance Toggle

Crossover adjustments flatten response bumps caused by nearby walls, reducing "boominess" for more lifelike sound from any position.