Yeah, it looks like the DMG is pretty vague - just lists ranges based on rarity. So I think this would be a good doc to use as a guideline - I'll add it to our "House Rules" post. The DMG leaves it pretty open depending on the campaign and how the DM wants to run it. I like to play a fairly 'high magic' setting - there are a lot of powerful and/or magical things in the world so it makes sense that magic items themselves wouldn't be all that uncommon. Now, the whole "Spellplague" plotline probably wreaked some havoc on magic items, maybe making them a bit more rare these days than they were in the past, but I'd really mediate more by where you're trying to find/sell them. Now, each group runs it differently... if you're looking to get full face value or even more than the list says it's worth, you probably want to RP it out, things like that, but for the most part I'd just give you face value for selling things - if you're in a town/city where a merchant or individual exists that would have that kind of cash. That is - don't expect to sell a 10,000gp magic item to the merchant in Phandalin, but they _might_ be able to do a one-time purchase of a smaller magical item, I'd have to check what their limits are. For instance, you have 2 +1 magic items worth 1000 & 1500 gp. No one in town has that kind of cash on hand... You could find someone in Neverwinter to take them off your hands, or maybe in another city that's larger than Phandalin. But even if they had that kind of cash/goods, they probably wouldn't offload, say, all of the stock in their store just to buy that one item (unless there was some compelling reason for them to do so) and you'd probably not want a store full of goods anyway... but that part we can play by ear, I think.
