Whilst I sympathise that the wifi card has failed outside the warranty period, I don’t know of any other company that would discount a replacement product in the way that Sonos does. I certainly wouldn’t call it “a measly 30%”.

BTW, is it the network card or wifi-specific? Can you connect by Ethernet cable?
 

I don’t have skin in the game as far as the Playbase goes and I’m not the original poster but I did click this to read the response. 

Let’s all be clear on the warranty - 1 year is by no means extensive.  In fact, Amazon offers 1yr warranty on their $40 Echo devices… Those aren’t premium products.  Amazon offered me a free replacement Amazon product well outside of my warranty when my $300+ device died one day 2+ yrs later.  Why did they do that?  I surmise it is to keep me as a happy customer that continues to use their products. 

The OP used “measly”, but maybe it would have been better said as “no different than the 30% upgrade discounts”.  I tend to agree with the inference that OP makes that known manufacturing problems should be handled differently than regular warranty problems.  Many of us, yourselves probably included, have spent thousands, if not tens, in this ecosystem.  We should be able to get many years of listening pleasure out of our system beyond our (measly?!?) 1yr warranty if it isn’t abused, neglected or mishandled.  Should we expect that our Sonos will last forever - no.  10 years though?  Yeah, I get behind that.

Mariekrisn - If you don’t get anywhere with Sonos (which may very well be the case), and you really love your Playbase, take a look on Ebay as there are a number of them sub-$200.  Add a 2yr Allstate warranty for $30-$50 and you’ll buy yourself a couple more years (guaranteed) for ~$200ish.