This is a member to member forum so Ebay will not see your message. Sellers choose whether or not they will sell and send to specific countries and Ebay does not dictate this.
Have you tried asking about this product on the forum in your country to see if you can source the item you want locally?
Trying to buy urgently needed items from the UK seems counterintuitive to me.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)