1. Siena 10" Signature Mattress: full was $229 now $179 at Amazon
We think the Siena Mattress is simply the best budget mattress you can buy online this year. Budget-friendly, supportive and built to last throughout your college years, it's a student's dream. The only minor downside is its firmness — our review team found it a bit too firm for most side sleepers. However, it’s an excellent choice for back and stomach sleepers. You'll get the best price on this foam bed at Amazon right now where you can get up to 31% off. This means you can snap up a twin size for just $109 (was $149), a twin XL for $149 (was $189) and a full for $159 (was $229). It also comes with a 10-year warranty and a 180-night sleep trial.

2. Brooklyn Bedding Standard 10" Hybrid Mattress: full was $265 now $188 at Walmart
Finding a budget-friendly, top-rated hybrid mattress can be tough as most low-cost options tend to be all-foam. But if you like the responsive feel, reliable support and breathability offered by springs, this Brooklyn Bedding deal at Walmart is a great find. And you won't want to miss the unbeatable prices we're currently seeing on the 10" Brooklyn Bedding Standard mattress. A twin is currently just $138 (down from $200), a twin XL is $148.75 (was $209), and a full size is only $188 (originally $265). Brooklyn Bedding is one of our most trusted mattress brands for cooling mattresses that help you get comfortable sleep night after night, and a full size mattress from a brand of such prestige for under $200 is outstanding value. Plus you get free shipping and limited lifetime warranty.

3. Zinus 8" Green Tea Memory Foam Mattress: full was 186.99 now $129 at Amazon
We rate the 10" Zinus Green Tea Memory Foam Mattress as the best cheap mattress for side sleepers thanks to its supportive, pressure-relieving foam hug. Just a little shorter than the model we reviewed, we're sure this 8" Zinus mattress at Amazon will be equally comfortable. It's available in four heights (6", 8", 10", 12") and five sizes (twin, full, queen, short queen and king). Not all models are discounted at Amazon right now, but you can get a 8" full size for just $129 (was $186.99) or a 6" twin for just $95.20 (was $118.99), which is great value on a foam mattress with gel infusions providing better temperature regulation.

4. Serta 7" Sertapedic Firm Mattress: full was $211.94 now $179 at Walmart
The new 4.4-star rated Sertapedic is a quilted innerspring mattress featuring a coil system for durability and support along with Serta's PillowSoft Aire foam for enhanced breathability and cushioning. As a firm bed, it is best suited to back and stomach sleepers who appreciate a solid, responsive sleep surface. Currently reduced at Walmart all sizes up to a queen fall under $200. Twin XL and full sizes are going for $179 (were $203.83 and $211.94 respectively) and a twin is $129 (was $182.24). These are unbeatable prices on a hybrid mattress made with CertiPUR-US certified materials.

5. Lucid 10" Memory Foam Mattress: full was $309.99 now $220.87 at Lucid
With a line-up of already-affordable beds, Lucid don't often run huge sales. But they've changed their tune this summer. The brand's 'back to campus' sale offers 25% off in cart and throws in two free pillows with every mattress purchase. Available in three firmness levels (a customization option we don't usually see with budget beds), the Lucid Memory Foam Mattress is a solid choice for range of sleepers. You can pick up a twin size up for $163.87 (was $229.99), a twin XL for $168.74 (was $249.99), or full for $220.87 (was $309.99). You'll want to let your dorm buddies know about this deal and if you order together you can bag extra savings. Buy two and save an extra 5% or buy three and save an extra 10%.