If you want to succeed doing business in Israel, you need to come prepared. Find out what your selling point is and then say it loud & say it clear. You have to be prepared to play open cards, too. You will be questioned, so, you better be telling the truth at all times.
You need to mind your quality-to-price ratio, as it is the norm in the Israeli market. If you cannot offer a good quality-to-price ratio, you should first make sure you can. A good quality-to-price ratio is what the dialogue starts with. The rest is extra.