You can always ask the breeder if the parents are pure Hogs or not (most crosses are listed as such on KS, such as Colombian x Hog crosses). I would search them on Fauna in the BOI section before purchasing any animals online as well.
You will be able to find Colombians (no "u"s in there) year round - they're very adunbdant. They come in several morphs too but normal babies are around $40-$60 + shipping.