Honestly, the annulment process is really difficult. It’s not so much a matter of property division, which is why a civil divorce is necessary first. This is more about the most intimate details, which must require vernal and written testimony from both parties and from witnesses; canon lawyers, and a tribunal. I know the head of the tribunal in our diocese, and he is one tough customer! It truly is not taken lightly. Irreconcilable differences are not grounds for annulment. A lot of personal, embarrassing, hurtful things go into it, and both parties must participate actively...
I have catholic friends who tell me for the right price an annulment is fairly easy to obtain.