She will buy your goods, but sometimes she requires more than 1 good to make the sell. For example she will take 2 apples for 2 coins but sometimes she'll only buy 1 for 1 coin. If you do not like an offer that she has for your goods then you can delete that offer by pressing the "x" in the top right corner of the offer. She will take 10 minutes to come up with a different offer for you.
Even though she will change her offers, the price is still the same... below is an alphabetical pricing list.
Item = Price per item, xp earned each sell
apple = 1 gold/apple, 1xp/sell
apple oatmeal = 190 gold, 4xp
arrow = 50 gold/arrow, 1xp/sell
backwoods scramble = 280 gold, 16xp
butter = 110 gold, 16xp
cheese = 340 gold, 16xp
cheesy omelet = 680 gold, 20xp
cream = 78 gold, 12xp
creamy oatmeal = 790 gold, 12xp
dragonwing torch = 520 gold, 27xp
egg = 39 gold, 16xp
forest charm = 56 gold, 10xp
golden apple = 310 gold, 60xp
herbed cheddar cheese = 1400 gold, 44xp
herbed goat cheese = 2600 gold, 50xp
honey = 20 gold, 28xp
jade clover = 290 gold, 60xp
milk = 28 gold, 8xp
oat = 4 gold, 4xp
oatberry bar = 570 gold, 22xp
opal-studded cup = 810 gold, 20xp
stardust lantern = 2100 gold, 115xp
trail snack = 2500 gold, 50xp
wooden shield = 1800 gold, 28xp