A Use Tax and a Sales Tax are equivalent (2.5%), but they will never both be applied to a purchase.
A traditional sales tax is only applied to tangible goods purchased in a store in the City Limits.
A Use Tax is only applied on tangible goods purchased through an online/out-of-state retailer.
In some cases you may see that the local sales tax is applied to something you purchased online because there is a physical store located in our City. This would ONLY apply to online purchases from stores that already have a physical presence in Blue Springs (Wal-Mart, Target, Home Depot, etc). In this case ONLY the sales tax would be applied and NOT the Use Tax.