Upload & Sell: Off
...My general feeling is that digital polarizers are not that effective, and so I don't use them. Do you feel that this is worth it? Thinking of your shots, you do go for high contrast, bright colour shots, so I suppose it fits right in for you. I would buy one for completeness, but I guess the prize will be very high.
For me it's worth every cent, all 65,000 of them. I should have bought the filter when I bought the lens (I've had it about 15 years) but held off for many years, they are just so damn expensive for what they are. But for me, for car photography, it's a must-have filter. You wouldn't need it for people.
By the way, there are 2 similar drop in CP filters and they are not interchangeable so make sure you buy the correct one if you decide to get one. You need the 13340 for the 180/2, see below.