Tactically wise to say the money was wisely spent and not your last dollar.
Tactically wise, to avoid saying you're financially strapped or broke after spending a little money buying your z30.
Compare yourself to the billions of humans who own cars and houses, and you'll see that $hundred is nothing at all. Your testimonial is good but then you shred the credibility that you just created because you add the fact that you don't have money left over for anything else.
Managing your money, Managing your budget, Managing your personal finances, Managing your lifestyle, Managing your priorities, Yes this is important but NO the price of the z30 isn't a big consideration when you look at your other major expenses.
For several months, many posts and threads about the z30 have mentioned personal money problems. Unhelpful. Not good. Some have even written that they have a hard time paying for rent !!