1. A print inspection apparatus which inspects a print product of variable printing, the print inspection apparatus comprising: a memory; and at least one processor that controls the print inspection apparatus to function as: a combining unit configured to obtain an object which is stored in a storage and used in the variable printing and to generate a combined image by combining the obtained object; an image setting unit configured to, in a case where the combined image is normally generated by the combining unit, set the combined image to both of a print image and a collation image, wherein, in a case where the combined image is not normally generated, the image setting unit sets a first image to the print image and further sets a second image to the collation image prior to printing the print image, and wherein the first image is a blank image, and wherein the second image is a black image used in contrast with the blank image; a printing unit configured to instruct a printer to perform printing the print image set by the image setting unit thereby generating the print product; an image obtainment unit configured to obtain image data by reading the generated print product with a scanner; and a comparison unit configured to compare the image data obtained by the image obtainment unit with the collation image set by the image setting unit to perform inspection of the print product.