GW posted on their blog today about the upcoming Realm of Battle workshop. Under one of the pictures the following was written:
When I showed up in the morning, Blake had undercoated the gameboard Chaos Black, and I found 18 pots of Scorched Brown paint and a Scenery Painting Pack waiting for me.18 pots of Scorched Brown? They're priced at €3 / $4. Come on! That's $70 in just basecoat?
Now I know they have to promote their own product, but sometimes it gets kinda hysterical. But I guess it's nice to give people an estimate of how much paint they'll need to cover a board. And the gullible ones will go buy their RoB and 18 pots of paint.
My recommendation would be to go to a craft store and buy whatever is equivalent to Skorched Brown – or whatever color you'd prefer as a basecoat – for about a tenth of the price. 3 cans of spray paint from your local graffiti store will work as well. Just don't go and buy 18 pots of Citadel paint. Ok?