I just measured my 7 pcs I have on my kitchen scale, it said 2.2 kg...
/edit
I'm going to buy some more copper for me next week ( I like to have spare parts, for next generation experimental work
, so there's no problem in that. The problem would be if I was lucky last time I bought copper, and this time the scrapyard can be out of copper... I'll go and see. The copper I bought was from scrapyard, but it was new and unused, I bought some leftovers from the machine shops.
I'll know much more about the postage tomorrow...NP