Probably.
Most tax rates in California are at the least 7%. Therefore, if you entered $4.99 as a purchase, your tax would have been approximately $0.35 which would round to zero. Therefore, nothing would be reportable on your tax return.
Please see the link below for more information on the Sales & Use Tax and how it is calculated based upon where you reside.
Calculating CA Use Tax
CA Sales & Use Tax Rates