Product review (1 stars): Purchase not recommended
Although several reviews cautioned that this product became stiffer than the OEM, I speculated that the lower cost might justify the purchase.  Not for me, as it turns out!

 When installed in February, 2016, the splash guard was a bit stiffer than the part it replaced, but it worked reasonably well.  In the intervening 9 months, the composite gradually hardened and shrank to the point of un-usability.  Disposal items had to be forced through the "flexible" guard which then clung to whatever device was used to push the item through.  Instead of releasing, the splash guard lifted out with the device, had to be removed manually, and be replaced in the drain well.

I called Waste King Customer Support (AMC or Anaheim Manufacturing Company) and ordered 2 OEM replacements.  The OEM splash guard is very flexible, allowing most disposal items to easily drop through.  Larger items can be pushed through with minimal effort and no cling.  The fit is snug enough for the guard to remain in place but still be easily removed when necessary.

The splash guard was packaged with a stopper and was priced (in September 2016) at $8.40 each.  With shipping of $8.00, the unit price rose to $12.40.  For me, the additional cost is well worth the enhanced functionality.  It also eliminates the inconvenience and ongoing cost of replacement every 6 to 9 months.  At these replacement frequencies, the cost of the the AMC vs. the Amazon product, shipping inclusive, is lower over a two year period.

I would strongly urge Amazon to negotiate with the OEM or other manufacturer to provide its customers with a fairly priced and much more functional Waste King splash guard replacement.  A low purchase price is not a viable substitute for value.