We did not update the electrical panel and it was original. We knew the buyer would have to do that, the paint, the flooring, updates for the kitchen and baths, and replace a rotting deck, shed, and fencing in the back yard.
We did a crawl space inspection and a little work down there before because we knew our neighbor had some issues (turned out we didn't,) and the whole house clean so we knew it would be livable. Everything else was up for negotiation with a buyer. Our buyer asked for the roof, mold remediation, and new bathroom venting after her inspection. We agreed to the roof and mold remediation but did not do the additional vent because we knew it could be done for a pretty minimal cost along with the electrical updates, something she had not asked us for and would be doing anyway. We were honestly thrilled she didn't ask for more.
We had priced pretty low for the neighborhood because of all the stuff, disclosed everything in our paperwork, and then went into negotiations willing to be reasonable. For us, it was about being honest and fair, and I think the buyers maybe sensed that? I felt like the realtors did a really good job on both sides managing expectations because it didn't take too much back and forth to agree on how we would handle it. I think in the end they got a good deal, but they also inherited a lot of issues we didn't have to deal with!
We were terrified that the inspection would call out things to halt the buyer's loan and it didn't happen. Yay! So really it was just about trying to strike a deal we could all live with. We didn't say yes to everything, but we said yes to enough for the deal to continue.
I think buyers are capable of understanding that "estate" home sales are somewhat unique. My husband and I bought our first house from the adult children of the owners so we knew it could work. We also knew that those adult children were difficult to work with and we didn't want to be that. (That home sat on the market for over a year, was dirty, had junk left in closets, etc., and an unreasonable price that they wouldn't budge from that couldn't even appraise for that. We understood that they didn't have the bandwidth to do repairs, so we persevered until they gave us a reasonable price and it was a great first home for us, but we learned what NOT to do when it came time to sell my parent's place.) Our buyers seemed to understand that we couldn't just jump down from different states and fix every little thing. It was just all about negotiating to make it work for everyone. I was so nervous because I saw newer houses go on the market for similar prices at a point when they still could have backed out, but by then they were apparently invested in making it work. Phew!
Honestly I still think the biggest thing was that we were able to let go of the "we could have gotten x amount 6 months ago" dissatisfaction and just look for a buyer. I'm so thankful my siblings and I were on the same page about that!