Prusa I3 aluminium frame (no replies)

hi everyone
looking to build myself a Prusa i3 in the coming months and want to go the single plate aluminium frame route; been doing a bit of digging around and found a few online O/S but wondering if anyone has had a 'local shop' cut the frame? and what sort of price I'd be looking at.

Thanks in advance. Im sure I will have lots of questions as I progress.