We went through and rebuilt the set over the last few days and it appears to be all there including the minifigures and accessories. Please see photos for what is included and the condition.
If for some reason you do find that a piece is missing when you are putting the set together just let me know as I likely have the piece in the Lego pieces that we have and I will send it to you. However, we went through it pretty carefully and it all appears to be present and accounted for including all of the hard to find accessories. Bonus items included are set 4736 Freeing Dobby, which also is complete with all minifigures and accessories and instruction book. Also included are Voldomort and Dementor minifigures!
Any questions please let me know. The item "Lego Harry Potter Hogwarts Castle (5378) Complete plus Extras" is in sale since Saturday, December 28, 2019. This item is in the category "Toys & Hobbies\Building Toys\LEGO Building Toys\LEGO Complete Sets & Packs". The seller is "6120" and is located in Irvine, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay, Russian federation.