The instructions for the pen say to try priming up to 4 times, so at 0.02ml a time, that would be a maximum of 0.32ml of medication needed for priming 4 times for 4 doses. There would need to be a little more to account for dead space, so maybe 0.4ml of additional medication would be enough. That would reduce the total volume to 2.8ml down from the approx 3.3ml that there is now.
We have previously been getting the best deal for Mounjaro in all the countries in the EU and the in US, we were paying a much reduced price compared to those countries. Add in the fact that there was enough medication remaining to do an additional dose, then we were getting a really good price for this medication. The combination of the recent price hike and the reduction in the amount of medication left over means we are coming more into line with other countries. It sucks for us, but we have had a good deal up to this point.