If we see some revolutionary technology next Wednesday, then perhaps these prices will be rendered completely bogus, but from the leaks we've seen, it's likely the phone is a retooled though not necessarily groundbreaking device.
Apple might offer a 128GB version, though you can expect to pay a load more for that capacity.
Sources speaking with 9to5Mac say pre-ordering should start soon after the iPhone 5's unveiling, though many international customers will have to wait to get them as shipping won't begin immediately.
New, iPhone 5-specific accessories like cables, cases and adapters (pluggable into an 8- or 9-pin dock, of course) are also reportedly set to ship with what will surely be a hot commodity.
Until next week, check out TechRadar's "New iPhone 5 release date, news and rumours" page and tune in Wednesday to see how close - or completely off the mark - we were in our predictions.