If you're up for a little project, bonnet struts can be home built. £12.95 for a pair of Corsa D boot struts, £5 for 4 10mm ball stud bolts and a bit of time fabricating some brackets out of stainless. @ADM has even done all the hard work for you....
https://forums.seatcupra.net/index....-fitted-bonnet-hydraulic-struts.444490/page-2
https://forums.seatcupra.net/index....-fitted-bonnet-hydraulic-struts.444490/page-2