Kevin,

If you look at www.westernrails.com they have at least three HOn3 tenders that are 3D printed.  One is a ET&WNC tender and the other two are D&RGW, 0470 (ex-Uintah) water car and W462 water car made from K-27 tender.  I believe these are all below $50 in cost.

Bruce Dunlevy