The Jazz EX with CVT is apopular spec model, the glass roof is a part way add on , almost a sunroof without fresh air just alot of sun, in the rain another matter.
You should not try to use a roof rack roof box.
The EXL has leather seats door panels OK if the heaters are working but not to everyones taste.
With any used vehicle around 7yrs its all about the condition and the se4vice history look at the invoices etc.
First off check HPI / Experian for loans & damage, then govwebsite for MOT history.
Drive the Jazz you'll be converted this model has amore relaxed gate on M ways 2krpm at legal limit. Hope you find its right for you , good luck.
Oh any bargain hard if you have no p/ex, plus ask for full tank fuel before it goes up on the 11th....