Fifteen students and four teachers from four different schools have come together in the Municipal Hall of Ungdomsbyen to present the games that they have developed

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Fifteen students and four teachers from four different schools have come together in the Municipal Hall of Ungdomsbyen to present the games that they have developed.
The wholesale price is different according to different pieces of one other bracelet you ordered

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The wholesale price is different according to different pieces of one other bracelet you ordered.
The underlying principles are solidarity and ability to pay though the amount may be adjusted to avoid overburdening particular countries

Can you repeat this sentence, but add in punctuation?
The underlying principles are solidarity and ability to pay though the amount may be adjusted to avoid over-burdening particular countries.