Des,
Grass mats may be the fastest and easiest way to make a base for an excellent ww1 model. But they might deserve a state of the art piece of grass, as most of the models shown here are state of the art as well.
Just a suggestion: there are other techniques to produce more convincing grass, especially in 1:32. I used from a friend an upgraded Noch Grassmaster, which makes green fibres in different lengths and color static, using high voltage and sprinkle it over an area with thinned white glue. That's how I made this piece of grass.
It might be even less expensive than the Polak mats especially if you don't buy the Noch Grassmaster, but build your own. We have been quite successfull in changing some fly catchers which are for sale for just a few euro's. You might know these. They look like a small tennis racket where flies are caught and electrocuted. If you enlarge the voltage with a diode cascade, and replace the tennis racket with a tea strainer (?), it does the trick. Sounds dangerous, but it isn't. The voltage might be high, but because the power comes from a small battery the maximum amps are very low. Still I would only recommend it to a skilled modeller.
Other convincing methods apply material from
Silhouette, by making a base from roofmate and pushing pieces of this material with pliers into it. One of my modelrailroading friends made
this using these techniques.
regards,
Ivo