Off Ebay you may (will almost certainly) find that it is a non-original stalk. I bought one of these but then realised that buying parts is very different to installing them and got
@timmus to do his magic including supply of an OEM stalk while fitting colour DIS 20 months ago. The plastic part of the stalks all look and feel identical. However, when you turn it round, on the reverse where the wiring from the stalk-end buttons emerges with the connector, on the OEM one, the wires are quite chunky and wrapped in proper loom tape. The Ebay one had a thin ribbon connector that on mine was already kinked badly where it flexes with stalk movement and I would be concerned that this is a weak point where the insulation or a connector could crack or fail. I've still got it on a shelf in my garage, and very happy with the real one fitted. As is often said, buy cheap, buy twice.
The bigger issue with non-OEM or non-Timmus is that the various available models of supplementary loom that you need to connect from steering column to the electronics under the floor are all a foot too short for an A2 (being both for LHD and intended for things like VW transporter or one of the contemporary VW Golf or Passat models) - so you have to think about bodging an extension - again not ideal for something safety-critical. The German place linked above is at least the right length as far as I understand, but more expensive and with Brexit, maybe difficult to get hold of.
I don't want to pee on your bonfire, but thought it would be useful to give a balanced perspective - best of luck with the upgrade!