https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/948978/December_BordersOPModel_Medium.pdf
Pages 19 and 33 refer. It was updated this morning.
Page 33 states - "With regards to VAT on imports of goods in consignments not exceeding £135 (excluding Excise and consumer to consumer consignments), we will be moving the point at which VAT is collected from the point of importation to the point of sale. This will mean that UK supply VAT, rather than import VAT, will be due on these consignments and therefore accounted for via the VAT return."
This seems a little contradictory because the point of sale for Thomann must be Germany.
I think we need to be careful.