The world divides neatly into the people who will pay twice what an item is worth when they need it and people who will buy almost anything so long as it is half price. Having been the latter for too long, I recommend that you save your money- or spend it on expanding your closet. At this rate, you will need the room.

The more times I go to PC- heavy events, the more I appreciate the subtle difference of a Regulation Doublet. $200 for the jacket you rented may well be a good deal and it may be a source of comfort and pride, but $200 in your pocket can do that, too. And it's easier to convert into other things. And, at the risk of belaboring my point, $200 will go a long way towards something that didn't come from the rental shop. For $1000 ( or maybe less) you can have a doublet or jacket or coatee that has actually been made just for you, in almost any fabric you want, cut to your measurements. If $200 is not a concern, then you may be able to step up into that market. Believe me, it is worth the additional expense, especially if you intend to dress up a lot. If $1000 scares you, then maybe you should reconsider the $200 as well.