Welsh bonnet insulation

I am looking at purchasing bonnet insulation for a series 3 Jaguar, and Welsh has 2 different options. The first is BEC22723 and is $225. The second is BEC22723K-$346 and has the word “original” beside it. I have tried reaching out to them by email and phone over the last two weeks but can’t seem to get a hold of anyone (perhaps they are on summer vacation). Has anyone had experience with either of these bonnet insulations and know what the difference is? And has anyone purchases anything from Welsh recently?