We've recently released a new version of the WW2 Soviet BA-64

2 very similar variants are available:
BA-64 (1942) - The original narrow track version
BA-64B - The improved version from 1943

Prices:
6mm is £0.77
12mm is £1.47
15mm is £2.22
20mm is £4.00
28mm is £6.50

The models are available in most scales.

LINK