eBay question?

So I ordered an item about $4 total well I checked the tracking and it shows tracking unavailable? Idk what that means but it says it will arrive August 13 . Which theres still time. The person who I bought it from has good reviews and has sold thousands of they’re items. Should I be worried that it won’t get here? Since it has no tracking? But it shows me it has been shipped and item is on the way?