among the large new rockets amazon was counting on only euro?

Indeed, sir, the question seems to suggest that Amazon was relying on a significant number of new rockets, but only one Euro, which would be quite a modest sum for such an ambitious venture. It is possible there may be some confusion or translation involved. If we take it at face value, the implication is that Amazon’s investment in these rockets was much larger than one Euro, and the visitor may have meant to say "only one Euro" rather than "only Euro."