@Anna Marcotte
I applaud you for wanting to get into real estate investing. I am unfamiliar with your market, but my response is pretty much how I'd respond to anyone in a most markets.
First, do you have any experience rehabbing a property? If not, have you ever worked with contractors in rehabbing a property? If the answer is no, I recommend you give a lot of thought about the risks involved and if this is the type of property you want to tackle for your first BRRR. It is not an impossible undertaking for you, but if the house is in such condition that it may not even be habitable, you might be surprised by the time and cost of renovations to make it turnkey. And given it is in such poor condition, there is a good chance some unexpected cost will arise during renovations.
Also, how quickly can you get permits? And if you plan on hiring contractors, how soon can any quality contractors do the work? Some other things to consider: What if interest rates keep going up? What if the housing market or the economy corrects? Highly recommend you make sure you have enough financial reserves to handle anything unexpected the might come up.
Regarding the list price - since I don't know the market, I don't know if $285k is fair value. But after you analyze the deal and determine what it will cost to renovate it, you can make any offer you want. And don't be scared of "insulting" the seller with a "lowball" offer. I've been involved in deals where we made offers that I thought would offend the seller, and we eventually ended up buying the property much closer to our asking price then the seller's original price. And consider it good practice to go through the process of analyzing the deal, working with a lender, making an offer, and negotiating terms.
Lastly, since you are new to investing, you might want to find a local real estate agent who is very knowledgeable about the market and has experience working with investors.
Wish you well and happy to answer any other questions you have.