[graycyn]

OK, as the owner of a still-working Sony T2, as nice a device as it is, I would not spend this much on buying that old of a device.

I check on my own Sony T2 every month or so, and it generally is fine, but eventually, I'll need to top it up.

The reason I would not go out and buy such an elderly device is that these batteries eventually all give out, and it's possible for them to swell and crack the e-ink substrate, or even cause a fire. The seller might be being perfectly honest, yet, you could spend your money, and end up with the device failing very soon after purchase. One just never knows. After a decade, the clock may be ticking.

If your current device is still going, keep using it, save up for something a little more recent. But it's up to you, as there's always the possibility your Sony could decide to up and "go" as well.

The benefits of a more recent device can include things like front lighting, or even warm front lighting, not to mention more speed and the ability not to struggle with higher resolution images, as mentioned. And even if you don't read illustrated books, it can be an issue with cover images.