I don't mean to be rude or offensive but if buying a set of rear sets for a $17000-$20,000 bike that you are planning on doing a track day with , an activity marred with danger and risk, then you have your priorities absolutely skewed.
Again, my intention is not to be offensive.
Your cheapest option is ducati performance GP QUick shifter. Will set you back $275-$300
Your other option (and a far better one) is to bite the bullet and get a set of rear sets. Skip the glamour of trick and expensive rear sets and get something basic (no offense woodcraft) like the woodcraft GP rear sets.
They will run you in the low $500s shipped but you will gain Far more than just the GP shifter.
If you were saving for a better or nicer set of rear sets in the future, remember that rear sets are one of the first things to break when the bike falls over. They are an item of utility and necessity.
Just my opinion