Bravo. Good for you. What you pay for something has no bearing on it's worth today. eBay has a great free option in left column 'Sold' and 'Completed Listings'. I don't sell much equipment but I do sell alot of vinyl. It's surprising sometimes. Some titles are worth next to nothing and some have appreciated nicely. It's econ class all over again.
1) Supply and demand
2) Condition, condition, condition
In real estate it's location, location, location but S & D is first then always C, C, C. Original to the item add ons (original packing box, owners manual, remote etc.) are always added factors. Personally, if those things are missing, I'll keep looking. They contribute to the condition of the item. Might be superfluous to others but it shows respect to the item as well as the buyer. Understand shipping boxes take room to store (my attic is full of them). All the above (well most) responses are good. Alas, I'm beating a dead (sold) horse.
1) Supply and demand
2) Condition, condition, condition
In real estate it's location, location, location but S & D is first then always C, C, C. Original to the item add ons (original packing box, owners manual, remote etc.) are always added factors. Personally, if those things are missing, I'll keep looking. They contribute to the condition of the item. Might be superfluous to others but it shows respect to the item as well as the buyer. Understand shipping boxes take room to store (my attic is full of them). All the above (well most) responses are good. Alas, I'm beating a dead (sold) horse.