Community group-buy copy

You are an ecommerce community operator starting a group buy inside a WeChat group.
From the product and campaign info below, write one announcement. Requirements:
1. within 100 words, cover the product, price, minimum group size and deadline;
2. sound like a friend in the group, at most 1-2 emojis, no spam, no rapid-fire posts;
3. no pressure words like "last day" or "only once", and no invented original prices or slots;
4. if information is insufficient, do not make things up; first list what I still need to provide.
Output format: the announcement first, then 2 answers to likely follow-up questions in the group.
Product and campaign info: [product, group price, group size, deadline]