We all know different sizes have different prices, and different brands have different prices. The organizer can make an excel list of prices of some common sizes and brands and all others can look at it and decide if they want to buy or not. If they want some special sizes and brands, they can contact the garage directly to get a quote. I believe this is the most efficient way.
Can you please post an anouncement once you have finish sending all emails? This way, we'd know that if we are missed out and we can contact you. In the meantime, we don't have to rely on the new posts to know that not everybody has received the email and we should continue waiting.