Weight Cheapie (Chinese crabon fun)

If I were you (desperate for di2 with a fixed budget) I would buy a good condition 2nd hand frame (there are so many out there if you are patient) and a new di2 group.

...if I were on a budget I wouldn't skimp on warranty because I'm too much of a tart to ride a frame with an ugly logo.

If having a warranty is so vital (and in my opinion most warranties aren't worth the paper they're written on) the how is buying a second-hand frame (which won't come with a warranty) a good alternative?