How do I contact a seller?

Hi. I am totally new to the site. I bought an item (tried to at least), but the seller cancelled the purchase with the shipping too expensive message. They then reposted the item without some of the bulkier extras. I would like to send a message to the seller to ask questions about the new posting. I do not have enough points to leave a comment. Is there a way I can get a message to the seller?

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