[dpkrjb]

You need to worry about the battery degrading at this point and what the costs to repair it would look like

[wtallis]

MBPs from that vintage didn't have the battery glued in. Anyone with fine motor skills can easily do the repair themselves for $90 in parts and tools.

[jtbayly]

Batteries for this model are quite easy to replace, and pretty cheap.

[hprotagonist]

yup. I've done it twice now.