I understand you want the most bang for the buck. When you are selling, of course the lower you paid for an item gives you more options in selling. 90% of what I sell there comes from somebody else's estate or garage sale...or found near the street or road... ;>) When my wife and I run our own garage sale, once or twice a year, the dealers come by to sniff out any pricing mistakes or items they know they have a buyer for. But, I have to keep the "Buyer" in mind when I do my pricing. All of us on this forum know the feeling of a good buy and the habit forming adrenalin rush that comes from a GREAT BUY.... Every buyer that walks up to our sale is looking for both.
I take time to clean up, repair, spray or paste wax most items if it doesn't cause it to lose value. I do that because mostly I'm looking for the highest dollar I can get and yet remember the average non-dealer buyer wants something "the eye loves" to keep for his/her collection or give to a friend, neighbor, or relative without spending a lot of time and money on it.... So, I price things so I can come down to the price I really want and let the buyer feel some level of "light headed happiness" as they walk away with it.
The other way I get my "mental FIRM price" is to help the buyer bundle... There are times with I have things I bought for little to nothing and when combining those with the bread-and-butter item, it still comes out as a super profit sale.
It works, because with our last garage sale a the end of October, and the help of listing with pics on Craigslist, local paper's written ad, and plenty of neighborhood signs with big letters and arrows near the high traffic roads and intersections, we broke our old garage sale earnings record! On a Friday, Saturday, and afternoon Sunday, sold $3,736.00 in items/inventory. Only six large/special things were sold at or just over $100.00. I could have gone over the $4,000.00 mark if I'd taken the unsold brass inventory to the scrapyard on the following Monday... Getting into a head-to-head bargain gun battle makes for a long day and ends with at least two unhappy people and unsold stuff. So in this economy of 2 million unemployed and 47% on the food stamp program, be happy with making double to 5 times what you paid for the item, and knowing they have only so much to spend on a good time and special things, remember to help the buyer... ;>)
Bill