The true point was that it is just advertising in the end. Judge Penon on their range of products, prices, service, and shipping. The Christmas card is not a important reason to choose Penon. That would be like choosing a worse Chinese food restaurant over a better one cause they give you a bamboo calendar.
No, I wasn’t suggesting the card as a reason to buy from Penon. Since I have a business background, I was just saying that it makes good business sense to acknowledge your customer’s patronage as a way to differentiate yourself from your competitors.