We've recently released Hobart's Funnies in 6mm scale.

Churchill Ark Mk I
Churchill Ark Mk II
Churchill Bullshorn plough
Churchill Carpet layer type C
Churchill Carpet layer type D
Churchill with deep wading trunking
Churchill with Double Onion
Churchill with Fascine and sled
Prices:
6mm is £3.50 GBP
The models are available in most scales.
Everything is 3Dprinted to order. STL files available