I have a 310 & my PC is five years old & it's always worked OK. (Kiss of death there me thinks).
I have always had it connected to the PC via a Belkin four port card.
Re prices I'm sure I've seen them for around the £100 mark. (310)
They are good & will print a wide range of label sizes etc. (labels can be a bit pricey) but I think it ease of use outways fiddling with Avery labels on the printer.
My thoughts for what there worth.