Calvin would not approve, as the disclaimer on the web site indicates:
These items were not produced, nor are they collected to venerate a man, but rather, to commemorate the life of one whom God used mightily to bring the light of the Gospel out of the darkness that entombed Europe at that time. We should be thankful to God that He saw fit to raise up faithful men to proclam the truth of His word. Even the briefest study of Calvin’s life reveals that we owe a great debt to the man who brought reform to the Church in the 16th century.
I must also add that the irony that Calvin would most assuredly despise the collecting of items bearing his image is not lost on us!