As far as I’m aware so long as it’s not dangerous then no, all paints at local diy stores like “Dulux” are slightly seconds or have slight imperfections, dulux centres are almost twice the price, euros as I’m led to believe are slight imperfections but are not dangerous, quality of materials in products for example, all I do know is he won’t use them as for example “discs warp” some sooner than others, he’s issue is who pays for his labour second time around?.......any garage have to warranty “parts and labour” for 12 months, if I bought “euro parts” he won’t fit them......someone I trust implicitly where cars are concerned.
Paul