The code you have looks like it should set the variable ok to me.
<cfset WA_redirectURL = "bundle_Results.cfm?salesID=" & ToString(getSalesID.salesID) & "" />
What is the result you are getting with this value? If there is nothing specified for the sales id then it is probably because the getSalesID.salesID does not have a value. Just before this line of code you should add in a cfoutput and print this value, you can follow that by a cfabort to stop the processing. When you test this out it should print the value to the screen. You will need to ensure this recordset variable has a value for it to link correctly.