No rights are granted or implied.
I offer combined shipping.
It means I keep all your bought items till you say me to send them.
Your first invoice is with shipping costs (5,50€ up to 4 slides, 7,20€ for 5 slides and more).
Then I send the invoices with 0,00€ shipping costs.
After you tell me to send your slides, I send all together in one parcel.
So you pay shipping cost for only one parcel. Even if you want me to send the slides purchased within several weeks.
Happy bidding!