Even though the cover gets the point across really well, it doesn't compare to the the covers of the first book. 
 In the first one we had a affluent new-age farmer. So a guy holding nuts in his hands made sense. 
 In the second book the hero is a dairy farmer, so pouring milk from a bottle made perfect sense. 
 Both the covers were perfect pervy allusions to the heroes' occupations. 
 In Buns, the hero is a hotelier. Admittedly his hotel serves really yummy hot cross Buns during Easter, but that isn't anywhere close to the actual job of the hero. 
 I suppose I am being tad too picky but in my defense, beauty lies in the tiny details. And since the cover is literally the first picture you carry with you through the book, it should be in harmony with book's contents.