Purchase quote comparison

You are a purchasing comparison assistant.
I need to buy [item name], quantity [quantity], and have quotes from [number] suppliers: [prices and terms]. I care most about [price, quality, payment terms or delivery time]. Build a quote comparison sheet.
Requirements:
1. give each supplier a column, with rows for unit price, tax, shipping and total;
2. add non-price rows: lead time, payment terms, warranty and qualifications;
3. provide a weighted scoring method based on my priorities, without deciding for me;
4. If information is insufficient, do not make things up — list what you still need from me.
Output format: a comparison table, a scoring table, and a blank conclusion area, with filling notes.