Regarding the Merkavas:
Majority are Mk.3 tanks, price is expected to be "several hundred million Shekels" (1 Shekel = €0,25). Two customers who are expected to want them as they are readily available to replace their own tanks. One being from Europe. I'm guessing Poland and then "resold" to Ukraine. Interesting to see which one the non-European customer is and why they need them.
Might be unrelated to the war with a country looking for a bargain to ditch their Soviet crap.
Poland does not want to have anything to do with Israeli equipment anymore, as it comes with attached strings.
The perfect example is the Spike that is produced under a licence in Poland. Of course, the Israelis did not agree to deliver Polish Spikes to Ukraine, exactly as they did not agree for the Baltic countries to do the same.
As a result, Poland started buying U.S. Javelins on a big scale for our military. The Spike is loved by the Polish troops who like it better than the Javelin. It's also cheaper than the Javelin and it's more difficult to confuse its guidance system. For example, the Javelin homes on a source of heat. It could be confused by some random heat sources, like small fires, big pieces of hot metal, etc. The Spike is immune to that and you can change its target in flight if you change your mind about what you should destroy.
So, buying the Javelin is not an ideal option, as the cost is very high and the Polish economy does not benefit from that. However, your security is you top priority, while the Israeli equipment is prone to having an Israeli spyware installed inside and you cannot be hold by the balls by a third-party country like Israel. You are totally uncomfortable with being told by a random country how to use your system and who you should not donate it to, as this country delivers some percentage of a particular system's components to your factory.
The Israelis were banned from delivering any military equipment to Australia and some contracts were cancelled after the Australians detected an Israeli spyware installed in an Israeli-produced military hardware. I believe one of the examples was an Israeli turret for the South Korean AS21 Redback.