SONOS' most popular speakers, the PLAY:1 and PLAY:5 are currently on sale over at Amazon. However, you do need a coupon code to get these sale prices. The PLAY:1 is available for $149, which is $50 off of its regular price, using the promo code SONOSPLAY1. The PLAY:5 is on sale for $399, which is $100 off of its regular price, and you'll need to use the promo code SONOSPLAY5 at checkout.
These two speakers from SONOS are largely the same, as far as speakers go. The major difference is their sizes, and the fact that the PLAY:5 can output more sound, since it is quite a bit larger. But both speakers are WiFi and Bluetooth speakers. Which means if you use a compatible music service you can stream over WiFi and get better sounding audio due to the fact that WiFi offers up more bandwidth than Bluetooth does. Otherwise, you can still stream over Bluetooth. Both of these do work with Alexa, so you can use the Alexa skill to tell SONOS to start playing your playlist from Spotify, Google Play Music or another service, which can definitely be helpful.
These are also eligible for Amazon Prime's free shipping. Which includes free two-day shipping, and pretty cheap next-day shipping if you need it here extra fast. If you are not an Amazon Prime member yet, you can sign up for a free trial of Amazon Prime by hitting the link below. You'll get 30 days free (if you're a student, you get 6 months), and then it's $99/year. Prime members do get a whole lot more than just free shipping though, so be sure to check out the full benefits.