I am DM for this path and when we play, one of my players usually supplies the miniatures.
For this adventure, though, the number of oversized miniatures of two particular monster types (no spoilers here), exceeds my players collection.
I have looked into picking up the needed miniatures (not being too fussy about exact matches, mind you) and the costs are astronomical.
Any suggestions about how to buy (heck, I will even talk about renting) the necessary miniatures without breaking the bank?