Amazon currently has the Sony SRSZR5 Wireless Speaker on sale for just $148. That's good for about $50 off of its regular price tag. Which is a great deal for this speaker from Sony.
The Sony SRSZR5 is a wireless speaker, with Bluetooth and NFC, and it has Google Cast. So it's a really good speaker to pick up, since you can Cast your favorite music and audio to the speaker from your smartphone. The NFC is also great to have, as you can tap your phone onto the speaker and have it pair instantly. If you happen to have a Sony soundbar in your living room, you can use the SRSZR5 for a surround sound setup, which would be pretty impressive. As you'd expect from Sony, the SRSZR5 does have great sound, even though it is not part of Sony's Extra BASS lineup.
This item is 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.