Walmart offers the Black + Decker Dustbuster Quick Clean Cordless Handheld Vacuum for $12. Choose in-store pickup to dodge the $5.99 shipping fee. That's the lowest price we could find by $8. It features a washable filter, 12.5-oz. dirt bowl, and 6.4 airwatts of suction power.
Before you spend another dollar on items and services like these, check with your public library. You will likely be surprised by what it offers for free.