I`ve just been up to
Halfords and got a box & spacer (as adviced here)
There are a few suggestion here to go at. I`ll try to get everything in the box and then see what the weight is, then get some quotes.
I think the price with couriers is determined by the destination generally, and that could make it a little difficult
to state an accurate postage cost on
ebay not knowing where the winning bidder will be from. Royal mail parcels will be a fixed price. Paisley Freight seems to be fixed too-£21 on their website.
EDIT: Send it now seems cheap.