Hi, Yes, it is a big chore to compare quotations. It gets even more complicated as the IDs have their own style of quotations. Some quote a standard package and then add-on the additional items. Others go by item by item as per your requirement. In any case, take time to review - mark the odd ones out and ask questions. Feel free to mark up the whole quote in pencil and ask questions either in-person or in email. Ask them to respond for each of your quotation. Internal color PVC - is a choice you can make. I went for internal colored PVC for my exposed areas like display cabinet, altar, glass shelf.Rest of the closed areas I went with white. Some people prefer internal colored PVC for wardrobes whereas for kitchen most people go for whites. Painting: Is a standard affair. The cost difference usually is the choice of colors. If you choose more number of colors, then the cost would go up. Can you share what's your quote for painting service. I paid roughly 2K for 5 Room including painting for door frames, doors and exposed Pipes. Discounts: reserve for the last. First go item by item, negotiate and then ask for discount later. Just from my experience.. Goo luck!