If you're just starting down that road -- and haven't shot in competition that much, it may not be worth it. But a year or two from now, it might well be worth the investment.
(If you've shot competitively in other venues, disregard that answer. But if you're really just starting, start with a good SP-01.)
Once you get into it, you may find that you really don't want to go there -- or that some other part of the discipline is calling your name. Given that, it might be better to start with a smaller budget.