Dell right now has a couple of really good, but still affordable soundbars available at even lower prices. There's a pair of Samsung soundbars and one from LG available. The Samsung HW-M360 wireless soundbar system which is priced at $119, taking $80 off of its regular price. The other Samsung model is the HT-H4500 5.1-Channel Home Theater System which is priced at $139, and that's good for $110 off of its regular price. As for LG, there's the LAS475B soundbar and wireless subwoofer which is priced at $129 which is $50 off of its regular price.
The Samsung HW-M360 is what many would consider the "low-end" of the three listed here. This one does not have a wireless subwoofer, and it is solely just a soundbar, but that's not a bad thing. It can still output a ton of sound, which is great. The LG model here does have a wireless subwoofer which can do up to 200W of power, while the soundbar has two 50W speakers inside, which combined, can really blow you away. Now the second Samsung one, the HT-H4500 is a 5.1-channel home theater system, it's really the whole package and it's a great deal for those looking for a great entertainment setup. In this package, you are getting 5 satellite speakers, a soundbar and a wireless subwoofer, so you'll get true surround sound out of this model here, and for $139, it's perhaps the best soundbar deal available right now.
These are all available from Dell.com right now, which does offer up free shipping and doesn't collect taxes. These are likely to go fast, so if you are looking to pick one up, you'll want to do it quickly, before stock runs out. Now, Dell does offer financing, which most people likely don't need it for these soundbars, but Dell does have some pretty good deals on other laptops and TV's that you may want to finance.