I "need" 2 cards so it's pretty easy to remember!! However there are some uncatalogued cards I still have to double check on before I buy them (again
). My whole collection list is in an email and is kept there with the prices paid and condition. I have my own website (Yahoo web hosting for $13 a mo.), as mentioned before, and it does everything I need...including being a permanent scan/pic hosting site.
If I started over I would use an excel spreadsheet as I do for my for-sale cards...