I haul all the time. I am constantly buying stuff off of ebay, here, or MUA. I do buy stuff from Mac once sometimes twice a month. It really depends if there is anything that I want during the middle of the month.
Lately, I have been buying my MSFs and postcards. I just completed my MSF collection and i am obsessed with the postcards.
I prefer little hauls because then I can go a few times. When a new collection comes out, I always go to the store, have a look, and then buy a few things. I will go back a few days later and then get some more stuff.