This prevent me to buy lamps and ballasts from there.

That’s just the way it is, Dor.

That's just the cost to move that thing from where it is to you, not much you can change, other than the postage service...

E-Bay combines finding, paying/money transfer, shipping and even some insurance in one convenient package, just a few mouseclicks actually. That allows them to charge an inflated monopolistic price for their service. You can of course do more homework yourself and save a lot with some less known forwarder/shipper etc.