Here are the prices for 3 types of spacers that Nino asked me to design up.
1/2 " Short Tube spacer - light grey
$2.70 each ($2.95 inc. GST)
3/4" Medium Tube Spacer - dark grey
$3.45 each ($3.75 inc. GST)
27mm Long Spacer with end rims - opaque white
I can't print due to the lack of support on the top overhung edge but is on Shapeways
$4.00 USD (purchase price)