IF formula with allowable variance

I need to write a formula that will put Yes in the column if the Quote and Invoice values are within $5 of each other, or if the Quote Frequency is recurring.



Here is what I have so far, but I can't figure out how to add the allowable variance of $5



=IF(OR([Quote Amount]13 = [Invoice Amount]13, [Quote Frequency]13 = "Recurring - Monthly"), "Yes", "No")

Thanks!