I look on ebay a lot and I see ghillie shirts in a range of tasteful colours, many of which would complement kilts that I have (at the moment my choices are black and cream, safe neutrals)

I like the slate blues and greens, navy etc but all of them seem to have a very high polyester to cotton ratio..67/ 23..
Anyone know of any outlets where (without throwing bad money after good, I top out at £25 for a ghillie) the colours are avialable but synthetics ratio is lower or non-existent?