I have installed a Trig TY91 at a cost far lower than 2000 € let alone 2000 GBP; and am very happy with it - both with the apparatus as such and the service. Most importantly, my supplier, a true-blue hardware electronics engineer, told me he is happy to sell it because Messrs. Trig actively support him in offering good service.
However I could do the installation myself (Annex 2 aeroplane) with only a final verification by someone qualified. If you need to have all the installation done by a certified workshop, that may carry its price tag - but I still find 2000 GBP very very expensive.
I can't say anything about the TY96, though - but could it really be so much pricier? Isn't it basically the same device in a different case?