Amazon currently has AUKEY's new Dedicated Subwoofer Dock Speaker on sale for just $59.99. That's down $20 from its original price, but you do need to use the promo code QC3AYFPB at checkout.
This Speaker here from AUKEY is a bit of an interesting item. It's basically a dock that you can dock your speaker in (which comes with this package), and get even better bass, since the dock has a subwoofer inside. It is going to provide you with some incredible sound, but if you're wanting to move the speaker, you can simply undock it and move it wherever you want. It's also a great looking speaker, with a pretty premium build, which is always nice. It is a Bluetooth speaker, but you can also go wired using the AUX cable if you wish to do so.
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.