Don't listen to those others. One-gold piece stuff starts to sell for 1 g.p. once you have your Speech up to 51. At 51%, items that are valued at 1 g.p. become worth 51% of a g,p, which then rounds up. That 51% can be easily achieved earlier by wearing an Amulet of Zenithar or Dibella (both of which improve Speech), or have either the Blessing of Zenithar or Dibella, or if you give a g.p. to a beggar, you can get the Gift of Charity (which improves Speech by 10%). There are also a variety of Necklaces for bartering like the Necklace of Haggling (+25%). All these things add together. So you can take a weak Speech Skill value of say 25, don a Necklace of Haggling (+25), have a Blessing of Zenithar (+15), and give a beggar 1 g.p. to get the Gift of Charity (+10), and end up with a respectable 75. These additions affect ALL of your transactions, in both directions. Buying stuff is cheaper and selling stuff is more profitable. If you have Speech's Allure perk, you get an additional 10% benefit to your transactions when dealing with a merchant of the opposite six. Eventually, it will get to the point that nearly everything you buy will be sold to you at the minimum price (the price you see listed when you look at an item in Inventory. Likewise, you will be selling most cheaper stuff at the maximum price (likewise shown in Inventory. The ONLY exception I know of is torches, which can never be sold for any value.
I too am a packrat, inclined to snarf up EVERYTHING that has value. So much so, most of my characters are named after vacuum cleaners (e.g., Dyson Hoover). "Making Skyrim a tidier place, wherever he goes."