First thing to flag, Jonathan: there isn't a 700Wh Avinox bike. The Avinox system uses an 800Wh integrated battery (the FP800) right across the range - and on the Amflow you can also spec a 600Wh. So "700Wh M2S" isn't a build that exists; if it's 700Wh you're after specifically, that's a different motor platform.
If what you actually mean is "cheapest way into an M2S bike with the big battery," here's what I can stand behind from our gold data:
Amflow PR Carbon - from £3,999 That's the cheapest M2S-system bike I can verify by a clear margin. Worth knowing: there are two listings in our database - one shows the
M2 motor on the £3,999 Carbon build and one shows the
M2S. The trims and prices are identical, so I'd confirm directly with Amflow which motor ships on the standard £3,999 bike before you commit - that's exactly the detail that decides whether it answers your question.
| Bike | Motor | Battery | From |
|---|
| Amflow PR Carbon | M2 / M2S (verify) | 800Wh (removable) | £3,999 |
| Megamo Reason Air AL 07 | Avinox M2S | 800Wh | £4,249 |
| Orbea Wild LT Hydro H20 | Avinox M2S | 800Wh | £4,899 |
So if it's confirmed M2S you want and no ambiguity, the
Megamo Reason Air AL at £4,249 is the cheapest unambiguous M2S bike in our data. If the Amflow's standard build does ship M2S, that's your £3,999 winner.
One thing worth weighing given your range obsession (no judgement - it's a good obsession): the Amflow battery is removable, which the Megamo and Orbea aren't. Matters if you fancy a spare or charging it off the bike.
Want me to pull full geometry on any of these?