
No idea! I've had swaps sent higher and lower. Hang on though, if it had the album from the 29 Feb shop in it maybe they thought it was too heavy for the value.
Is your local PO helpful? Would they guide you through? You might just have got unlucky with a "jobsworth" at customs. But I've had loads of stuff in mixed boxes that just say scrapbook supplies.
You could try listing items separately with a value for each (flowers $10, album $10) or something.
Has anyone else ever had this happen?