Yes (I wonder how many insightfuls will I get with this answer)
EDIT: I was under the (perhaps wrong) assumption that the addons were for BG2EE. If they are the BGEE ones that were bought and now dont work, then you should not buy them again.
@procco has it correctly; when you press Buy and enter your account information it will detect the purchase on your account and simply activate it.
This is true. I just recently reimaged my iPad and reinstalled BGEE. The addons said I needed to buy them again as they didn't automatically realize I had already purchased to. I went through the entire process for just one of them, clicked install, or buy, or whatever, it asked me for my iTunes password, asked me if I wanted to buy the addon (even showed me the dollar amount for the addon) and I said yes to everything. Eventually the iPad popped up a standard message saying "hey - you've already purchased this IAP so you don't have to pay for it again" - paraphrased obviously.
I read some where that all you need to do is go through the whole motion as to buying the IAP again and it won't charge you again for it. Of course - the assumption here is - your iTunes ID is the same.
Comments
(I wonder how many insightfuls will I get with this answer)
EDIT: I was under the (perhaps wrong) assumption that the addons were for BG2EE. If they are the BGEE ones that were bought and now dont work, then you should not buy them again.
I read some where that all you need to do is go through the whole motion as to buying the IAP again and it won't charge you again for it. Of course - the assumption here is - your iTunes ID is the same.