big eggplant fruits ?
 

I search many varieties with big fruits about 500-1000grs.

if you know where buy seeds.

For those not used to metrics, that's a little over a pound to about two and a half pounds. Almost any eggplant can get that large if allowed to grow, but there are certain kinds that still taste good and have small seeds at that size. I have moved away from most hybrids to open pollinated varieties, mostly heirlooms. The ones I am growing this year , and my seed sources include:
[B][U]Tomato Growers Supply[/U][/B]
Antigua
Violette di Firenze
[U][B]John Scheepers Kitchen Garden Seeds[/B][/U]
Vittoria
Listada de Gandia
[U][B]Bountiful Gardens[/B][/U]
Rosa Bianca
Casper White
[U][B]Pinetree Garden Seeds[/B][/U]
Black Beauty
Pingtung Long
[U][B]Bakers Creek[/B][/U]
Louisiana Long Green
[U][B]Franchi Semeti[/B][/U]
Violetta Lunga

a friend of mine living in Canada says that her Vittoria grows almost 2lbs...

A few biggies we really like - Prosperosa, New York Improved, Black Beauty, Early Green Giant, Listada Gianda, Rosa Bianca, and Italian Pink Bicolor.