300 quote is coming up at £360
If insurers are basing the quotes on the old 290 then that why these premiums are high. The 300 was much lower mostly because of the Front Assist feature.
The new 290's also come with this feature so the premiums should be more inline with the 300 than the old 290.
Explaining that to the call centre when you call up will be a waste of time, but worth noting.