Real Life TM really can take over sometimes, but 2 months without a simple note is a bit excessive.
It's reasons like this that I now refuse to hold items or take "dibs" from people. I've had too many people reneg on deals, and I turn down people who would actually pay me while I'm waiting for the first person. I'll give someone a few days tops, and usually only if I've dealt with them before. Otherwise... money talks and the first person to pay me gets it.
It may make me look like an ass to some people, but it sucks turning down 2 or 3 interested people waiting for money, and then having NO ONE to buy your item when it's all over.