A number of studies have shown that an electric vehicle is cheaper to own for an average user than a fuel equivalent. even with the higher purchase price.
The MQ ZS EV is available for £21,500 (pre-order) so they are already coming down in price for longer range vehicles (163 miles WLTP).
However EV vehicles are often offered in only one spec, which tends to be the higher spec. So a VW e-Golf isn't directly comparable to a lowest spec Golf as they don't offer the range of options for spec and trim.