Take a look at localbitcoins.com to see if you can find anything,
The URL for that:
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https://localbitcoins.com/country/ILThere's Meni's:
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http://bitcoil.co.il/There's also:
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http://bitcoinisrael.co.il <--- Fairly new, perform due diligence, use and escrow maybe?
You can also pay cash to buy either a CashU card or a UKash card, and use that instrument to buy bitcoins through Bitcoin Nordic (either), VirWoX (UKash) or mercabit.eu (UKash).
For larger amounts, of course, an International bank transfer to an exchange works.
The more comprehensive list of exchanges:
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http://en.bitcoin.it/wiki/Buying_bitcoins