not nearly as expensive as collecting a warmaster army or man o'war fleet but all of the different materials are adding up now. It was maybe 50 bucks to box up my 2 warmaster armies with minimum foam but I still need to get my chaos dragon in foam. but from there, little things start to pop up. I knew that having trays stacked up would end up with them shifting a bit and the tray on top would have a corner fall into the tray underneath it so now I will need to line my bags with Velcro and add some Velcro bits to one end of the trays to keep them from doing that, just adding up. Oh and my tray for my warmaster markers spilled out but now I have a box lid for the tray, that took a week and some pretty good crafting.
Oh, and its way more work than collecting a warmaster army or man o'war fleet! LOL
it's so much nicer showing up with a nice travel bag instead of a pizza box or something

its a ton of fun and honestly it makes the game so much better and quicker to set up, man o'war especially.
My brother was in the same boat as you stormwind until he saw my warmaster armies all magnetized. He's sold on the magnetizing now.