Not surprising. I remember being an undergrad when my BA was ending. I was out-of-state, my nearest relative was several hours away, and I basically only had enough space to pack up from my room whatever could fit in my car. I don't think I threw out
much, but there were definitely some things that were resigned to the bin because I simply didn't have anywhere else to put them. For example, I'm pretty sure I threw out a cheap but perfectly functional blender (maybe in the $40 range). The reason being: what was I going to do with it? My parents had a blender; whoever I was staying with in the short-term had a blender; if I wanted to mail it back home I'd probably pay more in shipping costs than the cost of the blender; so what purpose was there to hang onto it?
It was also a surprising PITA to get someone to take my gently-used mattress. Most places (Goodwill, Salvation Army, etc) didn't want it, which I can understand. I know several of my roommates ended up just dumping theirs. I called around some churches and they finally put me in touch with a family that lived in a trailer park nearby who were happy to come and collect it. I let them survey pretty much everything else in my room that I hadn't already packed up at that point as well and take what they wanted--the bed frame, some lamps, etc.