I assume by your post that you are already under contract, and heading into the inspection period. So, I won't advise on ways to negotiate an offer like others here have, because it sounds like you are already beyond that point.
However, the Seller Disclosures (we call them SPUDS - SPDS in AZ) are an important communication between the Buyer and the Seller about the property's condition as well as the intentions of both parties through the inspection process. So, don't feel bad about drawing questions, and don't allow your concerns to be disregarded.
Because it is PROBABLY a mistake or oversight, you don't need to make a federal case out of it, however, you can still make it part of your inspection period. Most likely, you have to submit something to the Seller through the inspection period that indicates your intentions to move forward, ask for repairs, or walk away from the house (in AZ, we call this the BINSR). When you get to that point, have your agent add something within that notice that might say something like "Seller confirms that all blinds in the house will convey at no dollar value at COE". This will clarify that the blinds stay, and won't seem like a big deal to the Seller, because they are expecting a response from you through the inspection period.
You never want to ignore a concern, even if it seems like no big deal. As you mentioned, it would be an expensive thing to remedy IF they happened to take the blinds. So, it is better to make sure it is clarified IN WRITING, than to suffer the consequences if the "mistake" isn't a mistake.
BTW, I had this happen to me. Several years ago, I was buying a house, and the woman took all of the drapes. They were designer drapes throughout the house and she wanted them in her new house, but had never disclosed that she was taking them. She had to bring them all back, and unfortunately for her, she had had them dry cleaned in anticipation of putting them in her new home....good news for me! But a lesson that you can never disclose too much. Opening up that line of communication is a good idea.