Just came across this Raleigh MV7 mini velo, looks pretty good! Although the stock components are nothing to shout about, the frame actually looks decent and very upgradable. Not sure what the frame material is, but the low price of $269 means that you can buy it and slowly upgrade all the parts.
Imagine changing the wheelset, crankset, brakes, shifters, rear derailleur and cockpit of the bike to that of the Dash X20. This might set you back around $1500? Add some extra money for the other little items like seatpost and stuff like that, and the total cost of the bike would be around $2000. Not nearly as good as the Dash X20, but certainly far more affordable. Also, it would be fun to upgrade and choose exactly which components you want, and can upgrade slowly in instalments.
After upgrading, the MV7 would still be slightly heavier, has only 10 speeds at most (because no front derailleur), and cannot fold. But once again, it would be much cheaper than the Dash X20 ($3200) or even the Dash P18.