Just to be clear, you think that honey is a secretion from the nasal mucosa of sloths?
Or are you being a reseller of ironing boards made specifically for gnomes?
Yes, like, whatever.
Care to compare the total cost?
Last time I checked 50m of 15mm copper tube was £150.
For 50m of 16mm PEX-AL-PEX it was £50.
Fittings seem to range from 50p to £1.00 depending in size, type and material. You can buy a lot of fittings for £100.
Are you spoiling for yet another pointless argument BTW? If so I'm not bloody interested.