Too many All-on-4 quotes

I started asking for quotes for All-on-4 Dental Implants and now I am more confused than before. One clinic answered in 15 minutes with a package price, another asked for scans first, and one wanted a deposit before giving much detail. For people who already went, did you feel the more detailed quote was usually the better sign? I know price is not everything, but the difference is big enough that I keep second guessing myself. I am mostly worried about what is included, temporary teeth, airport transfer, and how follow-up works when I am back home.