78 showings in one week should lead to a best and final scenario. If the overall feedback was the price is too high then the price is too high. None of the feedback included numbers where the buyers would get a deal done? 78 is a lot of buyers and your agent should have been able to gain a lot of insight on pricing needed to get a deal done.
The first thing you need to do is figure out the true ARV (the lender or appraisal ARV aren't worth anything). Yes, ask for comps. Closed ones from within the past 6 months. Also look at the available inventory right now and see who your competitors are and see how you stack up. 9K is a relatively small amount at this price point and so it's possible 429K is too high, too. 9K shouldn't keep offers away.
The other thing to consider is there could be something about your listing (neighboring properties, location, renovation, some other condition) that’s not readily apparent from your listing description and photos, but is a deal breaker in person. Examples would be brick wall views that aren’t visible in photos, really wide angle photos that make rooms appear much larger, etc. Very often if you’re more transparent about some negative aspects then buyers are accepting of them, but if they come as a surprise they can become deal breakers. If you take an objective look around are there any changes to the listing, photos, or staging, that could be improved upon?
If you do a price cut after one week it won’t look good. From the info you’ve provided I’m not even sure 9K would really move the needle either. I would first have your agent reach out to any buyers/buyers agents that seemed really interested and have a conversation about pricing. Have him hint that there’s some wiggle room on price and that you’re negotiable. Once he’s exhausted those 78 leads then you guys can talk actual price cut.
Good luck!