The last year it seems quality varies so much from month to month batch to batch, vendor to vendor, roll the dice but I have not had problems with Thom Thom, Kratom.co.uk, Kraatje or Kratombird. Though on the odd occasion I have had a delivery which has been a weaker batch. If worried about customs maybe not Kratombird as their packaging has a big Kratom leaf picture labelled KRATOM. Best of luck <3