They're adorable and I so want one... my dad can't stand the rats I've got let alone a giant one! lmao!

Anywho.. I think your best bet is see if there are any rescues and/or decent breeders or pet stores as a last resort.

Sorry I'm useless help hope you find your "2, 3, or 4" giant ratties!

Just found this website, may be of interest to you? African Pouched Rats