Yep, it takes time and costs money!
I usually sell the parts after I finish testing them on the dyno. If I port match them then they are worth less. Plus, it costs me time or money to port them. So I end up double worse off.
If I bolt the parts on right out of the box then I can usually sell them for a decent price. Also, when I test parts right out of the box the numbers mean more to guys reading the books or the magazine.
Of course, the reason why I do things might not apply to most people. In your case it would make sense to port match the intake.