Colorbond Fence Pricing Adelaide. For a colorbond post and rail fence, you are looking at a fence price of $65 per metre, more if your site is a little tricky or sloping. This is still the most cost effective option to get a solid fence at a competetive price.he cost of good neighbour fences are around $80 per metre. This can vary a little bit either way, but usually no more than $10. Competition amongst fence builders is quite high, so prices are fairly tight between fencing contractors.