If for instance I have 6 items all the same to put for sale, what can I do? i know that its against the Delcampe policy to put the same item for sale 6 times at the same time - why dont you add the Quantity function?

Hello ,
I think the best is wait until one is sold before putting another on sale.

It's better for yourself (in case of multiple bid , the selling price will be higher) and better for the site you won't "overcharge" with same items.

Regards.