You can search using the PRODUCTS tab a the top of the page.  
You can search using the Search all Products box.  -  Search by name.  For example pens.  -  Search by price.  For example .50 to 2.00, etc.
-  In the Search all Products box you can type in the word LOW which and all the products in the .34 to $2.00 range will come up.  Type in the word MODERATE and you will see items in the $2.00 to $5.00 range.  Type in the word HIGH and you will see items that are $6.00 and above.